🐞Shorts auto-scroll

Concise Description

Even when auto-scroll is turned off, the shorts right at the end of them play the next one instead of stopping.

Browser/s

Firefox

Other Browser:

No response

'Steps to reproduce' - Which of our features is required for the bug to happen?

Not sure.

Since when?

5/29/2026

Does the bug still happen when you log out of YouTube?

No

..No? Then please paste your yt.config_.EXPERIMENT_FLAGS. Twice (With the error & Without)

Content-Security-Policy warnings 5
MouseEvent.mozPressure is deprecated. Use PointerEvent.pressure instead. m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:7357:60
MouseEvent.mozInputSource is deprecated. Use PointerEvent.pointerType instead. m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:7357:60
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:684:19934
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:684:20104
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:684:30936
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:684:32967
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:684:36141
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:684:38315
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:684:46714
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:684:56583
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:684:36141
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:684:32967
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:684:38315
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:684:30936
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval:1:122
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval:1:122
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval:1:90
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval:1:90
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval:1:104
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval:1:104
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:684:19934
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:684:20104
Fingerprinting Protection is altering screen.availWidth and screen.availHeight. These values may not match your actual screen dimensions. This protection helps prevent websites building a fingerprint that can be used to track users. Learn more: https://support.mozilla.org/kb/firefox-protection-against-fingerprinting m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:6976:500
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval:1:124
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval:1:92
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval:1:106
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval line 1 > eval:1:92
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval line 1 > eval:1:124
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 684 > eval line 1 > eval line 1 > eval:1:106
Ignoring unsupported entryTypes: longtask. content.js:30:34318
Will-change memory consumption is too high. Budget limit is the document surface area multiplied by 3 (895671 px). Occurrences of will-change over the budget will be ignored. www.youtube.com
Content-Security-Policy: Ignoring “'unsafe-inline'” within script-src: nonce-source or hash-source specified RotateCookiesPage
Content-Security-Policy: The page’s settings blocked an inline script (script-src-elem) from being executed because it violates the following directive: “script-src 'nonce-oVVOedkYCzBFcEbut7Q7GA' 'unsafe-inline'”. Consider using a hash ('sha256-HaSJE+rPb1IV0bhHWOr69i45s1jsmy8l4AFLFOPApp0=') or a nonce. 26e59f7e-3d47-45e4-bfdc-5c097fc68db9:19:51
Content-Security-Policy: The page’s settings blocked an inline script (script-src-elem) from being executed because it violates the following directive: “script-src 'nonce-oVVOedkYCzBFcEbut7Q7GA' 'unsafe-inline'”. Consider using a hash ('sha256-D2n30IJNslOwK+GpftoFr3VIOQY+c1tUFfZw6iZqOhI=') or a nonce. content.js:74:196
Unable to check top-level optout: Permission denied to access property "document" on cross-origin object content.js:555:17
A resource is blocked by OpaqueResponseBlocking, please check browser console for details. IdentityRotateCookiesHttp
The resource at “https://i.ytimg.com/generate_204” preloaded with link preload was not used within a few seconds. Make sure all attributes of the preload tag are set correctly. www.youtube.com
Uncaught TypeError: TrustedTypePolicyFactory.createPolicy: Tried to create a second default policy
playerFitToWinButton moz-extension://5fad5ba4-6ee5-424b-b2f2-4f7804c1c7bd/js&css/web-accessible/www.youtube.com/player.js:1154
initPlayer moz-extension://5fad5ba4-6ee5-424b-b2f2-4f7804c1c7bd/js&css/web-accessible/functions.js:417
moz-extension://5fad5ba4-6ee5-424b-b2f2-4f7804c1c7bd/js&css/web-accessible/init.js:280
dispatchEvent https://www.youtube.com/s/_/ytmainappweb/_/js/k=ytmainappweb.kevlar_base.en_US.a-P64rBdIeI.es5.O/am=AAAAACAAYAhA/d=1/br=1/rs=AGKMywG-dqdy6e5O0lcI-ep1Oyuick0HBA/m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:14069
fireEvent https://www.youtube.com/s/_/ytmainappweb/_/js/k=ytmainappweb.kevlar_base.en_US.a-P64rBdIeI.es5.O/am=AAAAACAAYAhA/d=1/br=1/rs=AGKMywG-dqdy6e5O0lcI-ep1Oyuick0HBA/m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:14067
N https://www.youtube.com/s/_/ytmainappweb/_/js/k=ytmainappweb.kevlar_base.en_US.a-P64rBdIeI.es5.O/am=AAAAACAAYAhA/d=1/br=1/rs=AGKMywG-dqdy6e5O0lcI-ep1Oyuick0HBA/m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:14058
9348_onFulfilled https://www.youtube.com/s/_/ytmainappweb/_/js/k=ytmainappweb.kevlar_base.en_US.a-P64rBdIeI.es5.O/am=AAAAACAAYAhA/d=1/br=1/rs=AGKMywG-dqdy6e5O0lcI-ep1Oyuick0HBA/m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:6118
LsE https://www.youtube.com/s/_/ytmainappweb/_/js/k=ytmainappweb.kevlar_base.en_US.a-P64rBdIeI.es5.O/am=AAAAACAAYAhA/d=1/br=1/rs=AGKMywG-dqdy6e5O0lcI-ep1Oyuick0HBA/m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:6129
ayR https://www.youtube.com/s/_/ytmainappweb/_/js/k=ytmainappweb.kevlar_base.en_US.a-P64rBdIeI.es5.O/am=AAAAACAAYAhA/d=1/br=1/rs=AGKMywG-dqdy6e5O0lcI-ep1Oyuick0HBA/m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:6128
executeCallbacks_ https://www.youtube.com/s/_/ytmainappweb/_/js/k=ytmainappweb.kevlar_base.en_US.a-P64rBdIeI.es5.O/am=AAAAACAAYAhA/d=1/br=1/rs=AGKMywG-dqdy6e5O0lcI-ep1Oyuick0HBA/m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:6127
Xc_ https://www.youtube.com/s/_/ytmainappweb/_/js/k=ytmainappweb.kevlar_base.en_US.a-P64rBdIeI.es5.O/am=AAAAACAAYAhA/d=1/br=1/rs=AGKMywG-dqdy6e5O0lcI-ep1Oyuick0HBA/m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:1047
player

Content-Security-Policy warnings 5
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:7500:19934
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:7500:20104
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:7500:30936
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:7500:32967
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:7500:36141
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:7500:38315
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:7500:46714
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js:7500:56583
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:7500:36141
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:7500:32967
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:7500:38315
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:7500:30936
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval:1:104
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval:1:104
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval:1:122
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval:1:122
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval:1:90
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval:1:90
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:7500:19934
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval:7500:20104
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval:1:106
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval:1:124
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval:1:92
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval line 1 > eval:1:92
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval line 1 > eval:1:124
unreachable code after return statement pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval line 1 > eval:1:106
Fingerprinting Protection is altering screen.availWidth and screen.availHeight. These values may not match your actual screen dimensions. This protection helps prevent websites building a fingerprint that can be used to track users. Learn more: https://support.mozilla.org/kb/firefox-protection-against-fingerprinting pgjr4VDHT-UCwKX2iHqTLg8vsIOJu5R42hpEzZFNouM.js line 2 > eval line 7500 > eval line 1 > eval line 1 > eval:1:88
Ignoring unsupported entryTypes: longtask. content.js:30:34318
MouseEvent.mozPressure is deprecated. Use PointerEvent.pressure instead. m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:7357:60
MouseEvent.mozInputSource is deprecated. Use PointerEvent.pointerType instead. m=kevlar_base_module,kevlar_main_module,kevlar_base_sync_mod_chunk:7357:60
Will-change memory consumption is too high. Budget limit is the document surface area multiplied by 3 (895671 px). Occurrences of will-change over the budget will be ignored. www.youtube.com
Content-Security-Policy: Ignoring “'unsafe-inline'” within script-src: nonce-source or hash-source specified RotateCookiesPage
Content-Security-Policy: The page’s settings blocked an inline script (script-src-elem) from being executed because it violates the following directive: “script-src 'nonce-RJzo6pampheQCwzTp1h3AQ' 'unsafe-inline'”. Consider using a hash ('sha256-HaSJE+rPb1IV0bhHWOr69i45s1jsmy8l4AFLFOPApp0=') or a nonce. 26e59f7e-3d47-45e4-bfdc-5c097fc68db9:19:51
Content-Security-Policy: The page’s settings blocked an inline script (script-src-elem) from being executed because it violates the following directive: “script-src 'nonce-RJzo6pampheQCwzTp1h3AQ' 'unsafe-inline'”. Consider using a hash ('sha256-tMlJNc25qZvObyJCEjLMsnCO3dBaO23pftYXukFcYmo=') or a nonce. content.js:74:196
Unable to check top-level optout: Permission denied to access property "document" on cross-origin object content.js:555:17
A resource is blocked by OpaqueResponseBlocking, please check browser console for details. IdentityRotateCookiesHttp
The resource at “https://i.ytimg.com/generate_204” preloaded with link preload was not used within a few seconds. Make sure all attributes of the preload tag are set correctly. www.youtube.com
Cookie “ST-dglgq8” is invalid because its size is too big. Max size is 4096 B.

​

Are any errors or related log-messages shown in the Browser-Console? (F12)

Yes

Tested as the only active extension? (incognito mode or another browser users):

Yes

Expected preferred behavior:

No response

ImprovedTube Version

No response

Your Settings (From the Extension's ⋮-Hamburger menu > Settings > Backup & reset > Export settings)

No response

Your YouTube-Document

No response

OS / Device:

No response

No repository file, test, or entry point is named. Start by reproducing the issue in Firefox with Shorts auto-scroll disabled, then trace the extension's Shorts navigation and playback handling; done means the final Short stops instead of starting the next one when auto-scroll is off.