Bluetooth HRM causing ERG mode not to work


Did anyone faced the following issue before:

I’m connecting both my Tacx Flux and a bluetooth HRM thru my companion app to link to my Zwift on MacBook Pro (as my MacBook refused to acknowledge the bluetooth signal from Tacx anymore).

I realised that in workout mode with ERG on, the presence of the bluetooth HRM seems to have disabled my ERG mode even though the companion app is showing ERG On in the workout tab. Once I turned everything off and restart the process without the bluetooth HRM, it seems to work fine again.

Is this a bug as I see most users connect directly to their display devices and not via the companion app?