Subject: bug#43519: 28.0.50; Overlay at end of minibuf hides minibuf's real content

From: Gregory Heytings <[email-masked]>
Date: Sun, 20 Sep 2020 10:12:14 +0000

Another note: with (setq resize-mini-windows nil) the bug disappears, the 
prompt is always visible even if the overlay text is too large.  So a more 
robust solution to the problem would be to do something like:

(add-hook 'icomplete-minibuffer-setup-hook (function (lambda () (setq resize-mini-windows nil) (enlarge-window N))))

with N replaced by the number of lines that we are about to display.