Realms crash on certain player join

Tried on : Nexus 6, iPhone 6S plus, Windows 10

Joining my Realm with username GuillaumeC351 will make it crash. I had to create an other Microsoft account. I have also two friends, Skrillexo31 and PoissonSoupe600 that makes crash the realm, disconnect everyone and makes it unavailable for a few minutes. All my other friends have no issue connecting.

The server began to crash on my GuillaumeC351 after I opened a chest, took some item, and disconnected to change of device.

(Owner of the Realm : GuillaumeC351)

I hope you can find the issue,
Thanks