bug#24500: 25.1.50; Can't other-window from minibuffer if Ediff control panel frame present

[Eli Zaretskii]

> From: Richard Copley <rcopley@gmail.com>
> Date: Wed, 21 Sep 2016 18:23:20 +0100
> 
> C-x b * RET ; create a spare buffer so we can invoke ediff-buffers
> M-x ediff-buffers RET RET RET
> C-x 5 o ; Activate main frame
> M-x     ; Select minibuffer
> C-x C-o ; Something not very useful happens
> 
> At this point in the recipe Emacs is in a strange state. The cursor in
> the minibuffer is solid but not blinking. There are visual changes in
> the Ediff control frame as though the window is selected, but the
> Ediff frame isn't actually activated. Typing C-g doesn't exit the
> minibuffer (which is still reading the command for M-x). Typing a
> self-inserting character does send that character to the minibuffer,
> and returns things to normal.

Isn't this just the normal way of having input to one frame being
redirected to another?