bug#50660: 28.0.50; Text artifacting when the cursor moves over text under mouse face that originally displayed a box

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

> In this scenario, the characters of the text with box-face move
> horizontally to account for the box border, as the mouse highlight is
> turned on and off, but the character under cursor does NOT move, and
> with large enough font this leaves small artifacts (because the
> character is not erased correctly).

Yes, precisely.