bug#55779: 29.0.50; child frame

[drshapeless via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Po Lu <luangruo@yahoo.com> writes:

> drshapeless <drsl@drshapeless.com> writes:
>
>> I have commented out 2 calls in xfns.c and 1 call in xterm.c. But the
>> issue persists. A bit more detailed observation is that, the size of the
>> blocking overlay (just call it overlay now) is related to the last
>> completion child frame.
>>
>> For example, if the last child frame was 3-line tall, if the next child
>> frame is 5-line tall, only the first 3 lines are blocked.
>>
>> And still, this behaviour cannot be observed other than building with
>> gtk. 
>
> I'm lost.  What happens if you set `x-gtk-resize-child-frames' to
> `hide'?

I have tried this one even before sending the bug report, did not
help. The bug should be something related to gtk related commit in
master but not in 28.1 release. But I could not located it.