Subject: bug#46155: 28.0.50; Regression: buffer contents flicker on macOS frames when

From: martin rudalics <[email-masked]>
Date: Tue, 9 Feb 2021 11:49:55 +0100

>> Where do you type those letters?  Into the normal frame?
 >
 > No, into the minibuffer-only frame.  After `make-frame` the
 > minibuffer-only frame became focused and accept input.

Works here on Debian without problems, the minibuffer-only frame expands
by one character as expected.  I still doubt that this is an NS problem.

 >> Some other function that resizes the frame more conservatively or
 >> sporadically?
 >
 > I've set the `resize-mini-frames` to this function:
 >
 >      (defun test/resize (frame)
 >        (modify-frame-parameters
 >         frame `((width . ,(+ 80 (random 20))))))
 >
 > After each letter typed, the minibuffer-only frame is resized several
 > times.  The text is not visible during resize.

Can you try with a function that explicitly keeps the height constant -
i.e., calls 'fit-frame-to-buffer' with ONLY set to 'horizontally'.

martin