Missing research tree

[Dionysios]

I've unlocked all the unique buildings for the vanilla factions, but the alchemy research isn't showing up. I play on mobile and I've tried everything from abdicating to uninstall and reinstalling. It's this a known problem on mobile, and if so, it's there a known solution?

[Dionysios]

I kept playing, and in reincarnation 18, while playing undead (about 4DVg gems), it randomly populated after a spell combination went off. I'm not sure if they're was some criteria that I was missing, but I'm happy to have my alchemy tree!