I have the same issue; my remote on my LG TV no longer works after upgrade to 11. In my case, it's RPi2
Mines working now, courtesy of ardaoktay . Looking at this thread about an unofficial build of 11, I saw that there was a CEC fix. So I figured I'd give it a go (with the '.nocompat' file workaround for my Pi2). Low and behold, it works! I have a working remote on 11.
Perhaps the fix can be shared between developers?
Edit: well, it WAS working! My Pi crashed and the remote was not working after reboot.