Reported by two different users on our discord, note that i also have a lot of ExtendedAE in my world and am not crashing
Crash log from user 1: https://mclo.gs/Xd8TVn5
latest.log from user 2 (crash at line 8181): https://mclo.gs/qhSNCXx (i arrived about 6 hours after the conversation so no crash log)

Image from one of the users of the matrix that would be crashing, the image was taken after reverting back to an older version which let them into the world
https://i.imgur.com/hbakoBJ.png
My attempts at reproduction have thus far been unsuccessful
https://i.imgur.com/cR9UQtK.jpeg

Seems to be an ae2 issue