Still no captioning, and I've tested on episodes that played with working filters and working captioning last week. Firefox crashes on CBS if I disable ABP right now for some reason, but not if I don't.
Tried the same episode of the same show in Chrome without ABP and it plays fine with captioning, so it appears to be the filters blocking captions.
It's now working again. It's possible it was a problem with their site that happened to coincide with the time that I put the new filter on -- who knows? Hopefully it will stay functional.
... or not. If it loads now, it loads without captions. Otherwise the plugin just crashes.
I updated my filters just now but CBS seems to have changed the settings again ("we were unable to load a message from our sponsors"). They're really relentless...