Ok...
If the Retention Manager was set in its abbreviated form, and I open it again, this may happen:
(http://arqui3d.com/newquirk1.gif)
A video problem covers the Expand button... When I click it, this happens:
(http://arqui3d.com/newquirk2.gif)
The problem disappears, but it does not expand. The second time I click it:
(http://arqui3d.com/newquirk3.gif)
It finally works! :D
I can't reproduce it here, but I made a change that should prevent this. It will be in the next release.