Can't start sleep from Android app with connected Garmin Vivoactive HR

There is a little “bug”, if I want to start “Sleep” from the Android app: I’m not able to start the sleep from my Smartphone. If I do so, there is an “IQ!” logo shown on the watch, following a question after some time to launch sleep. But nothing happens. If I click on yes, the logo is shown again, and it asks again after some time (loop). Starting from the Smartphone works good.

Steps to reproduce: Start “Sleep” from Sleep as Android with a connected Vivoactive HR and Garmin apps (extension for Android and Garmin watch app)

Versions used: Newest version from PlayStore and Garmin app store