also happens with Venu 2 Plus. Very annoying as it wakes mobile phone dozens of times in a few minutes.
Samsung A41 Android 11 with Garmin Connect App installed
I also use a Fenix 6 Pro in the same environment without this issue.
All Update and Firmware are up to date.
Can be (sometimes) reproduced by leaving bluetooth range and reconnecting or by only dis- and reenabling bluetooth on the phone.