I have an autohiding panel on the right of my screen, and a normal panel at
the bottom. I shove my mouse into the top-right corner of the screen to get
a panel of launchers (you do this sort of thing when you use an 800x600
screen :-) ).

I thought that sometimes the autohiding panel was totally disappearing; on
reading the ChangeLog, it appears that when my mouse was below center when
it exited the panel, it hides underneath my bottom panel with no way of
getting it back.

As a sidenote: From a usability pov, I would expect to always be able to
get an autohiding panel to display by moving my mouse to the same part of
the screen, instead of having to vary where it goes each time. Cc-ing
usability-maint.

This is CVS from June 11.