All together opinion about ph...

Hi! Wow, that's really strange, it almost seems like it tried to revegetate, but being an autoflowering it's very odd. Sure, there's a possibility that genetically it's not stable, and that caused this stress when you put it indoors to flower. Plus, I think it was actually ready to harvest, but since it went past that, it wanted to go back to vegetative. I've read that some "weak" autoflowering genetics, if they revegetate, activate the photoperiod gene and become like classic photoperiods.. Anyway, why only 16 hours of light? You should have given it at least 18-20.. and I also notice some nute burn, you should have flushed it well. Keep us updated with better photos of the buds and the spots where it's revegetating! Happy growing! :)