Subject: 29.0.90; broken mouse-face
From: Juri Linkov <[email-masked]>
To: [email-masked]
Date: Thu, 04 May 2023 18:11:18 +0300
List-Id: <debbugs-submit.debbugs.gnu.org>

This is a regression introduced between 28 and 29.

1. M-x global-tab-line-mode RET
2. C-h C-n   ;; (view-emacs-news)
3. C-h C-t   ;; (view-emacs-todo)
4. C-x b *scratch* RET

Hover the mouse pointer over the tabs.
Over all tabs mouse-face is 'tab-line-highlight'
that is light grey color.  But over the "TODO" tab
the main text is not highlighted with mouse-face.
There is no difference between "NEWS" and "TODO"
with regard to their text properties.
Customizing 'tab-line-highlight' to a more noticeable
background color like red helps the observe the effect.