Tab Groups forces Bottom Bar to be disabled

Description

Tab Groups is a great chromium feature that can be enabled in chrome://flags, and is currently being enabled automatically in Chrome.

Unfortunately, when enable this in Brave, you are no longer able to use the bottom bar. It will always be disabled, even if you try to enable it again in settings. The only way to get bottom bar again is to disabling Tab Groups related flags.

Steps to reproduce

1. Go to brave://flags
2. Enable the flags
   • #enable-tab-grid-layout
   • #enable-tab-to-gts-animation
   • #enable-tab-groups
   • #enable-tab-groups-continuation
   • #enable-tab-groups-ui-improvements
3. Restart Brave twice to make sure the changes have been applied

Actual result

Tab Groups works fine, but now Brave’s bottom bar is disabled https://i.imgur.com/nZsedFc.png https://i.imgur.com/Y8POR1K.png

Expected result

Enable Tab Groups without losing Brave’s bottom bar

Issue reproduces how often

Easily reproduced

Version/Channel Information:

• Can you reproduce this issue with the current Play Store version? Yes
• Can you reproduce this issue with the current Play Store Beta version? Yes
• Can you reproduce this issue with the current Play Store Nightly version? Yes

Device details

• Install type (ARM, x86): ARM
• Device type (Phone, Tablet, Phablet): Phone
• Android version: 11

Brave version

1.21.38

Website problems only

• Does the issue resolve itself when disabling Brave Shields? No
• Does the issue resolve itself when disabling Brave Rewards? No
• Is the issue reproducible on the latest version of Chrome? No

Additional information

[srirambv]

Verification passed on OnePlus 6T with Android 10 running 1.23.68 x64 build

• Verified test plan from https://github.com/brave/brave-browser/issues/13904#issuecomment-797074754
• Verified with flags enabled able to group tabs
• Verified bottom toolbar works fine when tabs are grouped
• Verified able to close tabs from tab group without going to tab tray
• Verified able to reopen closed tab from group via undo button
• Verified bottom toolbar swipe works to switch tabs. Swiping happens within tab group and between tab groups
• Verified when swipe using bottom toolbar, coming out of tab group hides the tab group bar as well
• Verified tab group works on private tab as well

[samartnik]

New look with both Tab Groups and bottom toolbar enabled