I think this is a bug,
Using the app ‘UDP sender’ for android, I’m able to receive UDP messages with OSC in, but not UDP in.
Build 31900
Do you have it set to One Row per Line or One Row Per message? Per-line won’t work with OSC formatted packets since they don’t have newline characters in them.
OSC is just UDP with parsing included, and they use the same network code underneath so the issue is likely just with message parsing.
That was it. One line per message. Works fine.