Tell HN: YouTube seems to have a bug regarding the thumbnail video durations

Just noticed this.

https://youtube.com/@Petscop - It only appears to affect this one channel, though it could affect more.

If you read the thumbnail's duration value for some of the videos it will say that some are longer than an hour.

This is not true however, as upon clicking on the videos it seems that they're at most half an hour.

What's going on with YouTube here?