Well, the deployment of arty can still give some surprises - see pic.
A variation of the stuck arty in deployment phase, probably (reported in redmine). Here is what I did:
Patch 02e RC1; New Montebello battle, as French. Give Mortier corps a defend in line order, right on the border of the deployment area. Next, ctrl-Rclick on Mortier and repeatedly dragged him to the middle of my side of the map and back to the border of the deployment area, several times. The arty units move by themselves away from my camp - right to the noses of the russians - and I can not move them back to my camp, of course.
I swear I did not make this in Photoshop
(Edit: it also happens without any order to the corps. And the arty is really facing the enemy, it is no graphic glitch. if I start the battle, they proceed to unlimber, etc. Sav file sent to redmine)