bug#22068: 25.0.50; Delayed reaction to switching frames?

[martin rudalics]

>> When I do a simple (y-or-no-p "") in a single frame emacs -Q and click
>> the left mouse button, it also gets echoed as "down-mouse-1".  But this
>> echo disappears almost instantaneously.  With two frames and a click in
>> the "wrong" frame the echo is persistent.
>
> The function in question doesn't call y-or-no-p, AFAICT.

The effect is the same.

> When I call the function it does call, that call does not return if it
> gets switch-frame events.  IOW, the function that asks the question
> doesn't know the frame was switched, and cannot do what David probably
> wants: switch frame and reissue the question.

OK.  But how can we get rid of that "switch-frame-" echo at least?

martin