"View > Sidebar" Opening/Closing Very Sluggish, Then Jumps Back to "Home" tab

[Tex2002ans]

Describe the Bug

In Calc, pressing "View > Sidebar" took multiple seconds, then jumped me back to the "Home" tab.

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Note: Probably requires lots of people (with multiple languages/UIs?) editing at same time? We had 16+ people editing the same Calc file.

I could not reproduce locally OR in a document by myself.

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Steps to Reproduce

In Calc:

1. View > Sidebar ON.
2. View > Sidebar OFF.
3. Repeat Steps 1+2 multiple times.
   • I only had to click once or twice more before symptoms appeared.

Actual Behavior

1. Sidebar opened very quickly on Steps 1+2...
   • ... but on try 3 or 4+, it took many seconds for button/sidebar to finally react and expand/collapse.
2. Random jump to "Home" tab.

Expected Behavior

• Sidebar appears/disappears quickly, every time.
• Stay on the "View" tab.

Desktop

• Collabora version: 23.05.9.1snapshot
• OS and version: Windows 11
• Browser and version: Version 121.0.6167.184 (Official Build) (64-bit)

COOLWSD version: 23.05.9.1snapshot (git hash: 619c3e6(E)) LOKit version: Collabora Office 23.05.9.20240214 (git hash: 959a80b) Served by: Ubuntu 22.04.3 LTS 066d1b6f

Additional Context

Happened during COOL Weekly 156:

• @mmeeks could not reproduce while we were live-testing, but I was consistently getting it to happen.
  • (Maybe he only toggled ON/OFF once, while I was on "try 2 or 3"?)
• Someone else mentioned "going back to the Home tab" is some sort of "default state".
  • Maybe multiple sidebar opening/closings triggered something?
• I COULD NOT get it to happen on first round of ON/OFFs.
  • It only seemed to happen on later ON/OFF toggles.