couldn't turn on and off realm as i wish

Steps to Reproduce:

1.I clicked the button to open my realm.

2.I waited for a long time and it turned out a failure.

3.I clicked other server to make sure my internet was ok.

Observed Results:
Realm couldnt be opened and closed.
Expected Results:It should open/close successfully.

 

Actually I record my screen but it is too big to upload it here!

This problem always happen when I tried to upload/replace a world in realm but always failed. After the uploading failure, I wish to close my realm and it will bug