Running Mint 12 KDE with Plasma. When I select Activities from the upper-right corner thingy (don't know the name - sorry), the Activities bar slides up from the bottom of the screen, then slides down and goes away immediately. The only way to have it stay is to have a window open at the time, such as a Konsole window. Any ideas why it's doing this?

Additional info: it works fine if I right-click on the desktop and select Activities that way. It only seems to have the problem by selecting Activities from the drop-down menu on the current activity name in the corner of the screen (where the cashew is).

possible bug, search for it on bugs.kde.org and if not already there create one

Thanks. I'll check that out.