YouTube "Loop" feature turns off randomly - videos stop playing
When I play a Youtube video on loop (by right-clicking the video and selecting "Loop" from the context menu so a checkmark appears next to the word "Loop"), it should play an infinite number of times until stopped.
I am noticing that Firefox will turn off the loop feature on its own, after a random number of plays, without user intervention, and the video will end.
This could happen after just one play, or after a few plays, or after many plays hours later.
I have tested this issue in non-Firefox browsers, and it does not occur with them.
It happens in most any version of Firefox I try, including FF88 and the recent FF109.
Please see attached screenshots.
Is this a known bug?