I have the same problem with Surface Laptop 3 15" AMD.
Same as DaveHabets - I had fixed it in 1909 but the W10 2004 update broke it again - and now the power options have vanished on the Bluetooth-Qualcom Atheros.
This a Microsoft device running all Microsoft software with a Microsoft mouse. You would think that they would all work together?
Same issue -- no power management option for The Bluetooth-Qualcom Atheros. Anyone find workarounds for this?