WH-1000XM4: 'Automatic power off' timer setting missing?

Hi,

I use a Samsung Galaxy Note20 Ultra and the new WH-1000XM4 (Version 2.0.6) with the Headphones App (Version 7.1.0). The app allows one to have the headphones automatically switch off after 15min ('System tab' -> 'Automatic Power Off'). There used to be a setting to adjust the 15min to 5min, say, but I don't see this option anymore (on any of the three tabs 'Status', 'Sound', 'System'). Is it still available? A bug that it's missing? (all software is updated and this says that there must still be this option)

Thanks & cheers