Since it seemed very nice I started to used it.
After the November update 1511 build 1586.14 the troubles started.
I double-clicked on it and it will immediately close the window.
I found on the web that in those cases I should (1) Remove Groove (using the CCleaner uninstall) and (2) reinstall it from from the store.
I did exactly that but after 24 hours the same problem returned.
Has somebody tackled this problem?