I believe so also. Another user is also experiencing issues with the Lamp Socket in a similar manner. Something must have recently changed in the newest V3 Firmware.
The common factor is that both of you are using the Lamp Socket in the “Off” position and allowing a Rule to control the schedule.
When I open the cam to Live Stream and close it, it is not overriding the Lamp Socket and turning it back off. However I am turning mine on by Trigger Rule rather than Schedule Rule and I have my sockets set to Auto, Motion when Dark.
It should be reported as a bug in the January Fix it Friday posting.