I'm suspicious about blood boil because as I cleared areas setting this up and testing out the amp damage nerf, it sure looked like its still a gigantic aoe
I need to have this put side by side with the previous PTR footage but here's my initial test
and here's a pic I saved comparing it on PTR vs previous patch, both had actual 10 yard radius with that offline setup (my live one was previously ~10.6 iirc)

Sure appears at first glance that yes, blood boil still has 10 radius and these guys unironically just changed the TOOLTIP multiple times in a row without changing the spell, idk