Minecraft Realms module missing in 1.13-pre8

So when I'm trying to start the game in 1.13-pre8 it crashes on the main menu. It doesn't generate any crash-logs but it generates this error to the normal logs:
[09:42:25] [Client thread/ERROR]: Realms module missing

I thought that this was fixed in 18w20b but it wasn't. This also happened in 1.13-pre7.