Rittwik Chatterjee <rittwik@gmail.com> writes:

> 1. emacs -Q
> 2. M-x tool-bar-mode
>    This will disable tool bar
> 3. M-x tab-bar-mode
>    This will enable tab bar, but tab bar is invisible

I'm unable to reproduce this -- when I try this in Emacs 28.1, the tab
bar is shown immediately.

> In GNU Emacs 28.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.33, cairo
> version 1.17.6)
>  of 2022-04-28 built on frederik
> Windowing system distributor 'The X.Org Foundation', version 11.0.12101004
> System Description: Manjaro Linux 22.0.0 Sikaris
> Kernel: x86_64 Linux 5.19.7-1-MANJARO

I've got:

In GNU Emacs 28.1 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.33, cairo version 1.16.0)
 of 2022-07-04 built on joga
Repository revision: 5a223c7f2ef4c31abbd46367b6ea83cd19d30aa7
Repository branch: HEAD
Windowing system distributor 'The X.Org Foundation', version 11.0.12101003
System Description: Ubuntu 22.04.1 LTS

So that's pretty similar to your version, but on Ubuntu instead of
Manjero.

I do seem to vaguely recall there being some issues in this area (and
some fixes), though, but don't remember the details.  Would it be
possible for you to try the current "master" branch of Emacs to see
whether the problem is still present there?