[Bug]: Nextcloud: Chrome: Cannot type in Collabora Online Calc after opening Nextcloud side bar

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When using Collabora Online Calc with Chrome, there is a loss of focus of the cursor when selecting the Nextcloud side bar.

After which the user cannot type until they refresh the page or in some cases select another cell.

Status	NC Version	Richdocuments Version	COOL Version
OK	27.1.11	8.2.16	24.04.14-3
Not OK	28.0.14	8.3.13	24.04.14-3

Steps to reproduce

Steps:

Using chrome and Nextcloud
Create calc document in Collabora Online
Open the document and click on a cell
Go to "File" (in the Collabora Onlline Toolbar) > See History
From the right side bar select Sharing > Click on the internal link share
Try to type again
Move to another cell and also try to type

Result:

Cannot type
Need to refresh the page to be able to edit again

This does not seem to happen on Firefox.

The loss of focus when interacting with any object in the nextcloud side bar.

opening it and closing it triggers it.
Pressing any option in it causes it, even after you regained the focus somehow. And the nextcloud sidebar is still open:
    creating internal link
    creating external link
    switching to tabs (activity tab, history tab, sharing link tab)

Expected behavior

That the user can continue to type after opening the Nextcloud side bar.

Nextcloud Server version

29

Operating system

Debian/Ubuntu

PHP engine version

None

Web server

Apache (supported)

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response

Reproduce the focus loss in Chrome using Collabora Online Calc, then inspect the integration between the Nextcloud sidebar and the editor after opening Sharing, History, or Activity. Compare the behavior with Firefox and with moving to another cell. Done means users can continue typing after opening or interacting with the sidebar without refreshing.