I have the same issue, it runs for about 15 to 20 mins then crashes. It looks like they have been tinkering again. I have also seen odd effects with the windows like when I am typing in an IM box the cursor sometimes jumps to the middle of the line.
I see you have noticed the change to the icons on the bottom bar, why do they do things like that that don't need changing when there are things like group chat not working for years!
I have raised a Jira - VWR-25832
Linda