Sometimes...more often in sieges...it happens i cannot deploy or reorganize my troops anymore.
The whole "command-UI" on the right side is greyed out.
I can only select the units but don't even move them.
After click the <Start Battle> it works again.

Sometime in battles this happens also, but it returned normal after select-unselect the unit a few times.

[using EBII 2.01 with latest fixes]