I don't know why, but this just started. In gnome when I am logged in as user, and I click on the minimize button on an open window (such as the one at the top right of the web browser) instead of minimizing the window to the taskbar (as it did this morning) the window vanishes from my desktop.
It is only on this desktop as a user. If I log in as root on gnome, the window will minimize correctly. Also, if I switch to kde and minimize, it also minimizes correctly. For the life of me, I can't figure out either how this happened, or how to reverse it.
Any help would be greatly appreciated.