<!-- PLEASE FILL THIS TEMPLATE TO MAKE YOUR REPORT MORE HELPFUL FOR THE DEVELOPER!! If you don't know what is "good feedback", here is a guideline: https://github.com/piroor/treestyletab/blob/master/CONTRIBUTING.md And here is an example of enough helpful bug report: https://github.com/piroor/treestyletab/issues/2267 If you have any question about customization, it should be posted as a discussion instead of an issue: https://github.com/piroor/treestyletab/discussions For Japanese people: 英語は不得意、という場合は日本語で書いてもOKです。ただし、 「新規プロファイルでFirefoxを起動する所からの現象の再現手順（再現条件）」 「期待される結果」「実際の結果」は必ず書くようにして下さい。 --> ## Abstract Moving tabs (no reloading, etc.) sometimes is causing the favico to revert to the default globe. ## Steps to reproduce <!-- Please investigate complete steps required to reproduce the problem from scratch, on a clean environment with a new profile. See also: https://github.com/piroor/treestyletab/wiki/How-to-minimize-conditions-to-reproduce-a-problem --> 1. Start Firefox with clean profile. 2. Install TST. 3. Create some tabs. 4. Move some tabs. I was able to reproduce in a clean profile as well. (Video below from my main profile) <!-- Please describe how to reproduce your problem on my (developer/author/other peoples') environment. If your issue is related to tree structure, figures or screenshots will help me a lot, like: ``` A \- B (collapsed) C \- D E (selected) ``` --> ## Expected result favico when loaded should always be displayed. <!-- Please describe what should happen. Edited screenshots or screencast may help my understanding. --> ## Actual result https://github.com/user-attachments/assets/78fb51db-7918-4b84-b917-3a86f2273e09 <!-- Please describe what actually happens. Screenshots or screencast may help my understanding. Messages in the "Console" of the developer tools may help investigation also. https://github.com/piroor/treestyletab/wiki/How-to-inspect-tree-of-tabs#how-to-start-debugger-for-tree-style-tab --> ## Environment * Platform (OS): Windows 11 (latest) * Version of Firefox: 149.0.2 <!-- put exact version like "63.0" instead of "latest", because there are multiple "latest" versions for each "release", "beta" and "nightly" edition. --> * Version (or revision) of Tree Style Tab: 4.3.1 <!-- put exact version like "2.6.6" instead of "latest", because the "latest" version will change day by day. -->
Abstract
Moving tabs (no reloading, etc.) sometimes is causing the favico to revert to the default globe.
Steps to reproduce
I was able to reproduce in a clean profile as well. (Video below from my main profile)
Expected result
favico when loaded should always be displayed.
Actual result
2026-04-15_08-55-02.mp4
Environment