Subject: Re: bug#46827: Broken initial size of GTK3 frame

From: martin rudalics <[email-masked]>
Date: Thu, 6 May 2021 09:45:01 +0200

>>> It seems tab-bar.el already updates only between 0 and 1.
 >>
 >> That's not what I've seen.
 >
 > There are no other values used in source code of tab-bar.el.
 > But maybe sometimes the value of tab-bar-lines
 > becomes more than 1?

It's 2 after the tab bar has been produced for the first time by the
display code.  And that is what's been causing trouble for you.  The
value was oscillating between 1 and 2.

 >> But it's my experience that whatever we do to our frames, it's
 >> hard to break the external menu bar.
 >
 > The bug was reproducible only on GNU/Linux, not on MS-Windows.

I've never been able to produce a "broken menu bar" on any build.

martin