No problem. Patch attached.

On Thu, Jan 30, 2025 at 2:38 AM Juri Linkov <juri@linkov.net> wrote:

> > Happy to submit a patch for this but first wanted to discuss it to make
> > sure there's agreement.
> >
> > (defun tab-bar-select-tab (&optional tab-number)
> > ...
> >             (when wc-bl  (set-frame-parameter nil 'buffer-list wc-bl))
> >             (when wc-bbl (set-frame-parameter nil 'buried-buffer-list
> > wc-bbl))
> >
> > What this skips is that if either the originating window-configuration
> > buffer-list or its twin is nil, that the frame's parameters are not
> > properly reset to nil.
> >
> > This is a function that we've had to work around in an ELPA package by
> > advising tab-bar--tab to first clear these frame parameters before
> > tab-bar-select-tab goes to set them when selecting the specified tab.
> This
> > avoids the bug, but is annoying. This advice has been in place for three
> > years without issue.
> >
> > The patch would eliminate the 'when' conditions.
> >
> > What do you think?
>
> Thanks for finding this bug!
>
> A week ago I fixed a similar bug in 6b71d0b1786
> where needed to reset tab-bar-history-back to nil
> after selecting the specified tab.
> We should do the same for buffer-lists as well.
>
> So you proposed the right fix.  Please submit a patch.
> Then I will push all your other patches too.
>