First of all to answer your question: The API problem seems to be solved since one of the last updates.
I haven’t flashed it yet because of lack of time. My requirement is to have a self learning mode or a connection to an existing IR remote database (like tuya does) because I don’t want to program all my remote buttons separately.
ATM I did not find any firmwares / projects which have self learning modes (read out remotes and safe it directly in a database or on the chip directly) or project yet. See ESP-Home IR Remote controller with easy learning / teaching function