bug#65382: 27.1; Sometimes two cursors are unexpectedly shown

[Gregory Heytings]

> > I can reproduce this (with Emacs 24 up to 30).  But I don't see more 
> > than one cursor either: the "other" cursor appears to be a kind of 
> > visual glitch, it does not blink, and it vanishes after e.g. M-x TAB 
> > C-g, or moving another frame above the one on which the "other" cursor 
> > appears.
>
> Does it also vanish if you say "M-x redraw-display RET"?

Yes.