Losing All Tabs

I just had a number of tabs open in the Three Pane View and changed the view for a moment and all of the tabs disappeared. I stopped using the database immediately. Is there a way to get the tabs back?

I have also encountered a bug a number of times where I have multiple databases and multiple tabs open in a window. When choosing to close a database from the File menu, rather than merely closing the database, ALL of the tabs in ALL databases in the active window close, even if the database being closed had nothing being displayed.

Needless to say both of these problems really mess up working with this program.

It would be immensely helpful if DEVONthink had warning dialogs for actions that have major consequences, such as closing multiple tabs (as other programs with tabs do), AND would have any form of Undo in regards to closing tabs and windows as most other programs do.