I guess so, mine has stuck when the car has been frozen for a few days but then been fine after being opened and closed and the car locked and unlocked.
I also had a problem with my boot handle sticking in the open position, sprayed loads of WD40 in there and moved the handle backwards and forwards loads of times to free it up and that seemed to get the system really confused such that it wouldn't work at all. I thought I'd broken it but next day it worked fine again.
Mine seems a bit sensitive to any force being applied to the hydraulics at all. I have the autoclose option and if I (or more realistically my wife) try to close manually it will just stop working until it's reset it again but touch wood has always come back