I have added my C7 to my system. It has replaced the few items I had left on my ST hub and I am now in the process of splitting devices between my two hubs. C7 hub on one end of the house and the C5 on the other.
I exported a rule from my C5 hub and moved it to my C7, as all the devices for that rule were now on the C7. Just a simple rule to turn on lights in the laundry room when entering.
I have noticed over the last few days that the light would now go out on us from time to time while in the room.
I opened up the rule and noticed that at the beginning of the rule I have a cancel timed action. In the original rule on the C5 it was
Cancel timed actions :**This rule**
When imported, however, it did not maintain that action. It just had
Cancel timed actions :
So it never canceled the delay of turning off the light. I edited the action and added "this rule". Don't know if you would consider that a bug, but it seems the import could have maintained the "this rule" part.