Client hangs on connecting to Nintendo Switch server

Steps to reproduce:

1. Start a game on Nintendo Switch.
2. Run Minecraft for Windows 10 Edition.
3. Select 'Play' option.
4. Go to 'Friends' tab - the 
5. Try to join.

Result:
Client hangs on "Locating server". User is unable to cancel.

Expected behaviour:
Correctly joining game.

Additional conditions:
This feature sometimes works. There are no error logs nor any information about the problem.