hello guys! wanted to know exactly what happened last night when I took my PV2 straight up to 1300ft. usually around that altitude my drone loses control signal and it did and usually goes into RTH mode. but this time it went into RTH mode and it just stayed up there.it was night time so i was still able to see it very well and noticed the flashing RTH lights did not descend as it should have. I tried flipping the s1 switch back and forth to get out of RTH mode as i usually do but nothing worked. it just remained at 1300ft for an agonizing 15 min. i thought the battery was eventually going to die and it was going to come crashing on me. eventually i got it out of RTH mode and descended it and everything was fine but i dont want this to happen again especially if I'm flying long range with my FPV cutting off. I did a compass calibrating and was flying on GPS mode with 7+ satellites btw. and also during one of the times i was flipping with the s1 switch i noticed my left stick was locked down in position, not sure if it had anything to do with this. any help is appreciated.