Need help! I have a begonia melanobollata and west Texas blizzard. I’ve been having an issue with the tiny new leaves off the rhizome just rotting off. It’s been rotting where the leaf meets petiole. I can’t get a feel for if it’s too much or too little water and looking for insights. Both my problem plants have very hairy new growth. I thought maybe it was water sitting on the new bits but I also know melanobollata likes terrarium conditions so I’m confused. I have other Rex begonia I have no issue with.