Proximity join doesn't work from Teams Desktop app

Hi Andreas-N and @Pavel Yurevich 

On the mobile devices I do not have any problems also, it seems to work as it should.

It looks that the first picture is after a while when you clicked to join, using the old experience.

This is how it looks at the first time. 

When I wait a small amount of time the beacon of the room is picked up. And shown as a option.





When using the new pre-join this is what happens here.
The desktop client was first not able to find the room via its beacon, but after using the mobile (with the same account) it also showed up on the desktop App.
And indeed only when you click on search the room shows up.

Also when using the old pre-join and you click on search you get the different Room lists that are present in the Tenant. The Search for a room in the new pre-join gives different option to users where you expect to same options.