It is a very nice feature, but there is one point, that should be solved. I’ve tested it with openHAB 4.1.0.M3 and Android app 3.7.8-beta. The behavior of the appearance of the controls is different:
If the label tag is not present, the control bar is not visible in the WebUI.
To hide the controls in the Android app, the label tag must be set to label="".
@Lolodomo and @maniac103: Please synchronize the settings to have the same behavior in the WebUI and in the app.
My suggestion: No label → no controls