bug#61667: 29.0.60; Failure to redisplay

[Po Lu]

This log (``err-okay.log'') was generated when you encountered the
problem, right?  Because here, the buffer swap happens 400 ms after
the frame title changes.

> x_set_title: *scratch* - GNU Emacs at potemkin, 554169702405
> show_back_buffer: 554169844161
> show_back_buffer: 554169930769
> show_back_buffer: 554169943915
> show_back_buffer: 554170059535
> show_back_buffer: 554170197598
> show_back_buffer: 554170246100
> x_set_title: xassociations.rb - GNU Emacs at potemkin, 554170246258
> show_back_buffer: 554170256469
> show_back_buffer: 554170744241

While these two appear to be fine, with the buffer swap happening only
~15ms afterwards.  So are you sure your description is correct?

> x_set_title: *scratch* - GNU Emacs at potemkin, 554112118100
> show_back_buffer: 554112279375
> show_back_buffer: 554112342946
> show_back_buffer: 554112346783
> show_back_buffer: 554112437591
> show_back_buffer: 554112478589
> x_set_title: xassociations.rb - GNU Emacs at potemkin, 554112478748
> show_back_buffer: 554112489879
> show_back_buffer: 554112992823
> show_back_buffer: 554113493216
> show_back_buffer: 554113983937
> show_back_buffer: 554113992967
>
> x_set_title: *scratch* - GNU Emacs at potemkin, 554158723545
> show_back_buffer: 554158858188
> show_back_buffer: 554158917555
> show_back_buffer: 554158920621
> show_back_buffer: 554159045904
> show_back_buffer: 554159154120
> show_back_buffer: 554159200171
> x_set_title: xassociations.rb - GNU Emacs at potemkin, 554159200318
> show_back_buffer: 554159216640
> show_back_buffer: 554159719371
> show_back_buffer: 554160224273
> show_back_buffer: 554160719622
> show_back_buffer: 554161221086
> show_back_buffer: 554161349219

Thanks in advance.