http://bugs.winehq.org/show_bug.cgi?id=10814
--- Comment #7 from red team redteam316@gmail.com 2008-11-23 03:32:32 --- Window>Workspace>Reset palette locations
Does bring back the toolbars. Unlike Peter, it appears to bring back the main "Tools" toolbar on the left. It appears that there isn't any output that is different from what I posted above.
I can also confirm that hitting tab to hide/show the toolbars does bring them back.
It is odd although reproducible for me that after maximizing and the toolbars have disappeared, hit tab twice(first tab hides all and second tab shows them). After tabbing twice, you can minimize Photoshop and then maximize it and the toolbars will stay. It only works the first time though. If you minimize and maximize again, the toolbars will be gone, and you will have to double tab again.
I also have noticed that the "Options" and "Status Bar" toolbars are not affected by the disappearing bug. They are always there when maximizing the window. So it appears that it only affects the floating toolbars.