bug#61667: 29.0.60; Failure to redisplay

[Po Lu]

Dmitry Gutov <dgutov@yandex.ru> writes:

> The problem, indeed, could show up if the delay between me pressing
> 'a' and the buffer being displayed could still reach 200-300ms even
> with constant title bar. But it doesn't.

Maybe the damage to Mutter's frame window is what is causing the
confusion.  Since the buffer swap happens immediately after the title is
set, that seems plausible.

What happens with an undecorated frame?