Document does not refresh in Markdown Editor

Type: Bug

A document's content does not automatically refresh in the new Markdown Editor after being modified externally, even in "Read-Only" mode.
It does refresh in the classic Text Editor view.

The new Markdown Editor is awesome, by the way.

VS Code version: Code 1.137.0 (645f29cc3176500b4b5762ba887cf2a7f0ffdf2c, 2026-09-08T13:43:59-07:00)
OS version: Linux x64 6.8.0-40-generic snap
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) 7 240H (16 x 1019)|
|GPU Status|2d_canvas: disabled_software
GPU0: VENDOR= 0x0000, DEVICE=0x0000
Machine model name:
Machine model version:
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: disabled_software
multiple_raster_threads: disabled_off
opengl: disabled_off
rasterization: disabled_software
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: disabled_software
video_encode: disabled_software
vulkan: disabled_off
webgl: disabled_off
webgpu: disabled_off
webgpu_on_vk_via_gl_interop: disabled_off
webnn: disabled_off|
|Load (avg)|1, 1, 1|
|Memory (System)|31.05GB (7.12GB free)|
|Process Argv|--no-sandbox --force-user-env --ozone-platform=x11 --crash-reporter-id 6ef14e89-30d9-4010-88ec-eb444d69a445|
|Screen Reader|no|
|VM|0%|
|DESKTOP_SESSION|ubuntu|
|XDG_CURRENT_DESKTOP|ubuntu:GNOME|
|XDG_SESSION_DESKTOP|ubuntu|
|XDG_SESSION_TYPE|x11|
Extensions (15)

Name|Identifier|Author|Version
---|---|---|---
ESLint|dbaeumer.vscode-eslint|dbaeumer|3.0.34
Git History|donjayamanne.githistory|donjayamanne|0.6.20
GitLens — Git supercharged|eamodio.gitlens|eamodio|19.1.0
EditorConfig|editorconfig.editorconfig|EditorConfig|0.18.2
GLSL Syntax for VS Code|geforcelegend.vscode-glsl|GeForceLegend|0.3.4
Mocha Test Explorer|hbenl.vscode-mocha-test-adapter|hbenl|2.14.4
Test Explorer UI|hbenl.vscode-test-explorer|hbenl|2.22.1
Test Adapter Converter|ms-vscode.test-adapter-converter|ms-vscode|0.2.1
Language Support for Java(TM) by Red Hat|redhat.java|redhat|1.56.0
XML|redhat.vscode-xml|redhat|0.29.3
Gradle for Java|vscjava.vscode-gradle|vscjava|3.18.0
Debugger for Java|vscjava.vscode-java-debug|vscjava|0.59.0
Project Manager for Java|vscjava.vscode-java-dependency|vscjava|0.27.6
Extension Pack for Java|vscjava.vscode-java-pack|vscjava|0.31.1
Maven for Java|vscjava.vscode-maven|vscjava|0.45.3

A/B Experiments

```
vsliv368cf:30146710
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
82j33506:31327384
envsactivate1:31551504
cloudbuttont:31379625
3efgi100_wstrepl:31403338
55ia6109:31457054
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
c3h7c220:31478652
cp_cls_c_1081:31454833
conptydll_true:31498968
e9c30283:31461165
c9b86496:31447327
ei9d7968:31496641
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
ddid_t:31478206
hmra_i5g22:31518061
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
db5d2638:31499441
jb_cp_cls_t_632:31543129
56dj4588:31512888
32d76977:31512328
ha629193:31508444
jh5f2457_c:31540921
jbcp_cls_pctr_t:31531130
cp_intellij_t_nes:31548657
jf4hg949:31526829
ahp-both-windows:31556933
ihg5j128:31534457
7g2b5551:31542111
sandbox-ui-on-2:31543161
enable_editor_pane_layout:31569726
allow-none:31555437
36h42362:31564511
c7c27ce7:31554789
1h923230:31564177
0dg73464:31554319
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
0d8dfbc3:31570291
a1hcc538:31559322
0c1h4866:31566224
vrbsty_fls:31561059
session-archive:31558132
5b8j3302:31564601
mangle-name-treatment:31572634
allow-signed-out:31581176
intellij_nes_preview_t:31580086
multiv2:31574985
2bfb8b39:31576696
unread:31581112
links-treatment:31581630
aw-autom-off:31581692
revealsession_control_7ed7e840:31582193
permission_prompt_treatment:1332566
ccr_pr_nudge_auto_review:1319472
vsc_wsm_c:1340633
eh853263:1370294
h5e14506:1348996
1g5a5742:1379227
3aced641:1389836

```