Originally Posted by JSWolf
I managed to duplicate this. I also found the solution. With the book browser window showing on screen and the rest of Sigil minimized, double click the book browser titlebar. It then disappears and ends up back to being docked.
I was going to say Bravo!, but that did not work in XP.
I tried :
Minimizing from Full Screen: then double clicking
Starting with a less than full screen Window: Minimizing the double clicking
This is a really weird (QT) bug to work on some Windows systems and not others