When you start Minecraft, the launcher prints in the Game Output
[Client thread/ERROR]: Realms module missing
Linked issues
Attachments
Comments 14
I have this version, but it is also strange that for you Minecraft 1.8.9 uses a later version of realms than the snapshots.
That's because snapshots won't work with Realms servers anyway so nobody bothers updating the library there.
I think this should be moved over to https://bugs.mojang.com/browse/REALMS
Invalid, snapshots don't get realms.