bug#53298: 29.0.50; GTK3 frame stops updating

[martin rudalics]

> No, that didn't help.  Reverting 483c5e953c as suggested in #49955 does 
though.
> I mucked with the revert a bit, the issue is skipping the the FocusIn handling
> on GTK.
>
> The minimal working revert is below.  Not sure if this is safe for the other
> issue through.

Thanks.  I attach a diff against Emacs 28 for this.  Can you try it?
You would have to set the variable 'x-set-frame-visibility-more-laxly'
to either 'focus-in' or 't' to see the effect.

Thanks, martin

x-set-frame-visibility-more-laxly.diff
Description: Text Data