Maybe it's just some setting that screwed up... Can't find any info on how to do a reset to default settings? (Other than this...
https://svn.jdownloader.org/issues/7088 ) I fiddled around with the views filter, thought the youtube links were just filtered out, but it doesn't seem to be that.
24.07.19 00.36.28 <--> 24.07.19 00.38.36 jdlog://8044186935451/
is the error log however. I can see there's activity for the youtube plugin at least.