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:

> One other problem with this implementation is that the additional code
> will run when the mouse-highlight is removed as well, in which case we
> know that no adjustment is needed for w->phys_cursor.x.

Interesting.  What if the cursor is moved while it is inside mouse face
though, if the adjustment is done in show_mouse_face? Won't it only
apply to the cursor when the mouse face is first shown, and not
necessarily when changes happen to the position of the cursor later?

Thanks.