If “yes”, I’m keen to hear if it seems to be working OK. In particular this test:
setup gimbal so that its pitch is controlled by a channel on the transmitter
keep transmitter turned off
power up flight controller and gimbal and wait for 20sec or so for everything to power-up
turn on transmitter
In 3.6.3 (and earlier) I think the gimbal would have moved to an extreme position at Step3 (i.e. before the transmitter is turned on) but with Copter-3.6.4 it should not move until Step4 and even then it should move to a good position.
I’m just looking for confirmation that the issue appears fixed.