This remains unfixed as of 1.15.2, but I asked the owner of the RCON newline fix mod if it could be updated for 1.15.2, and they just uploaded the 1.15.2 version (thanks!), so rcon is once again patched and working properly on my server.
It would be really nice to get this fixed at some point, though. I'm pretty sure it's just a one-line fix somewhere!
Wisq
This remains unfixed as of 1.15.2, but I asked the owner of the RCON newline fix mod if it could be updated for 1.15.2, and they just uploaded the 1.15.2 version (thanks!), so rcon is once again patched and working properly on my server.
It would be really nice to get this fixed at some point, though. I'm pretty sure it's just a one-line fix somewhere!