Re: An unexpected delay when making text invisible

[Eli Zaretskii]

> From: Marcin Borkowski <mbork@mbork.pl>
> Date: Mon, 01 Feb 2021 05:39:38 +0100
> 
> I checked this in emacs -Q, too.  Say M-x invisibility-test-setup and
> then:
> 
> - if you say M-x invisibility-test-toggle, everything is fine - but
> then, the buffer is changed from the minibuffer to some other one.
> 
> - if you press `t', nothing happens until you e.g. switch buffers (just
>   pressing M-x to change to the minibuffer is also enough).
> 
> Am I doing something wrong?  I expected that pressing `t' would switch
> between visible and invisible instantly.  Why does it not?

It's a bug, please report it.  We probably need to add
buffer-invisibility-spec to the list at the end of frame.el.