"expand to show full article" prompt on forum?

[JmaCWQ]

Just visited here today for the first time in a while and was met with this irritation.
Nothing would work, if I clicked on it it just loaded the homepage, couldn't read threads, couldn't post anything.
Just PM'd Magnetron and the PM went through ok, now it seems I can post, view etc. and that 'expand' thing doesn't show

EDIT: Firefox 102.10.0esr

Edit 2:
After posting the above post it immediately came back and wouldn't go away again.
Now I'm on Vivaldi browser and it doesn't appear to be happening anymore...