They started popping up for me; after looking into it, it appears that YouTube enhancer was conflicting with ulock origin. Disable Youtube enhancer’s ad blocking and ublock will work again.

Some people will see something like this and others won’t. They are rolling it out slowly so we get used to it.

I saw it exactly one time, and then I think my blockers got updated and I haven’t seen it since. That works for me!

I don’t see it with NewPipe either

Sorry youtube… not my tempo.

These pop up for a second for me and then dissappear

I have ublock origin installed