It's probably the same problem as described here:
http://bugzilla.lyx.org/show_bug.cgi?id=5274
Stefan
Am 13.11.2008 um 20:56 schrieb Ivan Werning:
Using LyX 1.6 for Mac OS X 10.5.5
The following gets me stuck in Fullscreen:
-Open any file, or a start a new file. (or you can do this without a
file too I think)
-Go to fullscreen.
-go to edit Preferences>Editing
-change Hide Toolbars, Hides Scrollbars, Hide Tabbar from checked to
unchecked
-hit Apply
I don't think it really matters what exactly you do in the
preference pane, even if you uncheck hit apply but then recheck it.
-Go back to your fullscreen frame. Try to get out of it... when I do
this I am stuck there. Fullscreen does not come off.
It took me some time to find something that does reset things and
gets me out of fullscreen. This seems to finally do the trick: if
you close the file and go to preferences>Look and Feel and hit the
button "Clear All Session Information" you can then get out of it.
Odd. Anyone can reproduce?
-ivan