Thanks for the feedback, I was just able to reproduce this too (by doing a hard reset from the libreelec setttings addon).
But this is another, one-off thing that most certainly doesn't have anything to do with the KEY_RIGHT issue.
It's not a race between lircd and lircd-uinput, the condition is not on the socket (IIRC it was some time before, but that's not the case here).
Although annoying, just do another reboot and it should be fine. Let's ignore that for now and focus on the KEY_RIGHT issue. Anything odd at systemctl status or input grabbing would be interesting to look at.