bug#34294: 27.0.50; flymake-start-on-save-buffer has no effect

[martin rudalics]

> Maybe because fit-window-to-buffer is broken?
> Another case where it's broken is proced
> that uses fit-window-to-buffer:

I need a complete scenario for that to reproduce.

> 0. emacs -Q
> 1. C-x 3
> 2. M-x proced
> 3. d d x
>
> The buffer *Marked Processes* is displayed in random place.

Here that buffer appears in the window on the left.  What do I have to
do to reproduce this use case?

Thanks, martin