If your IR problem started after upgrading to OSMC 2022-09 then maybe on your pi TWO lircd processes are running in parallel? I had exactly that problem. You can check this by
ps guax| grep lircd
There should be only one running process /usr/sbin/lircd. For a solution of this problem see my thread Unable to get IR to work on bullseye
And check the most trivial, your remote maybe on low battery?
Regards, Michael