No indication of which tab is selected, or how tabs are changed past a limit on Linux

[wknapik]

Description

Once I reach 120 tabs, opening a new tab (ctrl+n), or switching tabs (ctrl+tab/ctrl+shift+tab) no longer leaves any trace in the tab bar. Tabs continue to function correctly - can be opened/closed/switched, but the UI no longer indicates any of that in the tab bar. It's not clear which tab is active and where it is among other tabs and all tabs to the right of tab number 120 are not indicated in the tab bar.

Once enough tabs are closed (for me that's when the number gets below 120), opening a new tab again results in a new tab indicator in the tab bar and I can once again see which tab is currently active and what tabs are to the right of it.

Steps to Reproduce

1. Open 120 tabs
2. Open some new tabs, try switching between them, or closing them

Actual result:

A "hidden" set of tabs.

Expected result:

Regular operation, like with <120 tabs.

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

Brave	1.36.112 Chromium: 99.0.4844.51 (Official Build) (64-bit)
Revision	d537ec02474b5afe23684e7963d538896c63ac77-refs/branch-heads/4844@{#875}
OS	Linux

Version/Channel Information:

• Can you reproduce this issue with the current release? Yes
• Can you reproduce this issue with the beta channel? ?
• Can you reproduce this issue with the nightly channel? ?

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? n/a
• Does the issue resolve itself when disabling Brave Rewards? n/a
• Is the issue reproducible on the latest version of Chrome? ?

Miscellaneous Information:

This is very confusing and inconvenient

[jeffbrog]

I have the same issue on Windows OS, laptop, limit is about 80 tabs, no way to scroll to the right as Firefox will allow. Please ad scrolling arrows to allow easy access to the invisible tabs.

[wknapik]

Before this issue is resolved, you can give the following flags a try

• brave://flags/#scrollable-tabstrip
• brave://flags/#scrollable-tabstrip-overflow
• brave://flags/#scrollable-tabstrip-with-dragging

I've been using these for a short while and while there are some minor kinks, they mostly work well