>> 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.
 >
 > Yep, this works.  Thanks!

Eli, is this OK to install on the release branch?  It doesn't affect
default behavior but leaves us a fire escape for this and similar cases.

martin