After encountering a similar issue with all the "swarm" monsters, I noticed that despite the statement above, this issue seems to be "unfixed" (assuming it was fixed earlier). In fact, every Swarm statblock is simply listed as "Medium beast" instead of "Medium swarm of Tiny beasts" (or whatever it should be).
https://www.dndbeyond.com/monsters/swarm-of-rot-grubs
This is listed as a Tiny beast, when it is supposed to be a Medium swarm of Tiny beasts
Fixed. Thanks!
After encountering a similar issue with all the "swarm" monsters, I noticed that despite the statement above, this issue seems to be "unfixed" (assuming it was fixed earlier). In fact, every Swarm statblock is simply listed as "Medium beast" instead of "Medium swarm of Tiny beasts" (or whatever it should be).
Affected monsters:
Still unfixed.
Yep, I still see "Medium beast" instead of "Medium swarm of Tiny beasts" for all of the ones I linked.
The right type must be introduced in the monster system for this to work properly. It is on the short-term of things to do.
Thanks for letting me know! Hopefully it happens soon :)