What Happens:

My Game crashes if I start it and I’m logged into my Xbox-Account

What should happen:

My Minecraft starts normally and l play without being interrupted 

Reproduction:

1. I start Minecraft

2. It’s loading

3. It’s finished loading and I’m in the Menu

4. It crashes (A few seconds after 3.)

Exception:

1. I use the few seconds to sign out of my Xbox-Account
2. I wait some seconds
3. I sign in again

Then it’s works almost normal, but some error messages pop up (like „loading of Character 2 failed“, but nothing really bad) AND the Market Place doesn’t work anymore (It says I should check my Browser Connection, but I’m definitely connected to the Internet)

I got the same Problem with Minecraft Earth, but there isn’t enough time to sign out before it crashes. 
I made a Video  showing the Process I just described (excluding the thing with the Market Place), but I can’t upload it cause of the restriction made by the Admins. If I would be given an Email Adress or something I can send it to I would do so.

I got this problem with my iPhone (IOS 12.4.5), my Computer (Win10-1903) and my IPad (IPadOS 13.3.1) (McEarth only with my IPad, didn’t test it elsewhere)

This problem isn’t new. I got it for a few months now, but I thought it would be solved with the next update.