bug#46299: 28.0.50; Value of tab-bar-show not respected in new frames.

[Eli Zaretskii]

> From: Bastian Beranek <bastian.beischer@gmail.com>
> Date: Tue, 9 Feb 2021 19:46:14 +0100
> Cc: martin rudalics <rudalics@gmx.at>, 46299@debbugs.gnu.org
> 
> Eli, Lars, what do you think? Since I already contributed a few
> patches I would guess I need to assign copyright. I am fine with that,
> maybe it's time to do it even if my contribution could be accepted
> without. Could you please send me the form?

Sent off-list.