Tab groups do not work as intended, they "break" or "shuffle" the tabs within them or combine them with other groups.

[LanCeeXD]

Description

whenever I put a few tabs in a group (not an excessive amount, both open in total and in any given group), later on these tabs get "thrown out" of the group or even get combined to another group, ruining any organisation efforts made.

a concrete method for reproducing this issue is quite hard to figure out, as I don't really notice when it happens, so to me it seems like it happens randomly, but it happens often when i reopen a closed tab, for example.

Before:

After reopening a closed tab:

Steps to reproduce

Here's the easiest method I've found that can reproduce it:

1. Open Brave
2. Create a tab group
3. Drag a few tabs into said group, or use the right-click menu to do so.
4. Make a new tab, go to any page, then close it.
5. Reopen the tab with Ctrl+Shift+T, or right-click > Reopen closed tab
6. Tabs will get moved around

Another method:

1. Open Brave
2. Create a tab group
3. Drag a few tabs into said group, or use the right-click menu to do so.
4. Close Brave
5. Open Brave again

Note: Opening, closing, reopening, then right away closing and reopening again after adding the moved tabs back into the groups, will not reproduce this issue. Not sure if it is to do with it being the same tab, or how much time passes since closing it.

Actual result

My tab groups broke and were shuffled, often out of their groups.

Expected result

The tabs should've stayed where they are

Reproduces how often

Intermittent issue

Brave version (brave://version info)

Brave | 1.73.104 Chromium: 131.0.6778.204 (Official Build) (64-bit)
Revision | 215b794a7c1f3e28151d0f7712e32c71be48775c
OS | Windows 10 Version 22H2 (Build 19045.5247)

Channel information

• release (stable)
• beta
• nightly

Reproducibility

• with Brave Shields disabled
• with Brave Rewards disabled
• in the latest version of Chrome

Miscellaneous information

note: this also, sometimes and to an extent, goes for normal tabs that aren't even in groups, they do not stay in the same place and move around as they please in any window, and sometimes get added to groups that they were never in to begin with.

some tabs also get moved around when making a new tab; i pressed ctrl+T whilst writing this to see what happens, and the exact same tab i just made was moved to the middle of the bar, rather than the end as it should've. opening from different tabs moves it to the same spot it was automatically moved to.