TST tab list blank when moving firefox window to different monitor (Error location found)

[goransque]

Abstract

When I move the firefox window from one monitor to another the tabs are no longer shown.
This issue appears to have been caused by my xulstore.json file as after deleting it I have not been able to repro the issue.
Making this bug report to make you aware of the potential issue and in case anyone else has this problem.

Steps to reproduce

UPDATE: I have not been able to repro with my xulstore file alone, I must have missed some other file that is necessary to cause the issue. Will update with a proper repro path if I can figure it out.

1. Start Firefox with clean profile.
2. Install TST.
3. Replace default xulstore file with provided file below
4. Have firefox on primary monitor (windows display monitor 1)
5. Move firefox to secondary monitor dragging to top of screen to maximize (windows display monitor 2)

Note: issue only occurred when dragging from Monitor 1 to Monitor 2.
Note 2: While the tab list was blank adding a new tab would cause the missing tabs to reappear.
note 3: I doubt this is relevant but for full clarity of my setup, monitor 1 was 4k and monitor 2 was 1920x1080

xulstore.json

Expected result

Tabs are still visible after moving firefox window to secondary monitor

Actual result

Tabs in list are no longer visible

Environment

• Platform (OS): windows 10
• Version of Firefox: version 125.0.3 (64 bit)
• Version (or revision) of Tree Style Tab: 4.0.14

Additional information

I also was encountering an issue where the tabs would not update after making changes to the order or nesting.
However adding a new tab would cause a refresh and update the tab list to show them in the positions they should have been in.

For example if I were to un-nest a child tab it would still show as being nested until I added a new tab at which point the list would refresh and the tab would be properly unested.

Unfortunately I was unable to find a reliable repro for this issue and have not been able to determine if this issue was also caused by the xulstore file. At minimum I have not encountered it since I deleted my xulstore file.
If I run into the issue again I will make a separate bug report on it.

[piroor]

Does this happen only with TST? It may be a bug of Firefox itself if this happens with other sidebar addons also like Sidebery.

[piroor]

note 3: I doubt this is relevant but for full clarity of my setup, monitor 1 was 4k and monitor 2 was 1920x1080

Do these monitors have different DPIs? Does the problem still happen when you configure them with same DPI?

[github-actions]

This issue has been labeled as "stale" due to no response by the reporter within 1 month (and 7 days after last commented by someone). And it will be closed automatically 14 days later if not responded.