Studio One stops reading Part Automation (via Macro Knobs) as soon as I touch the Knob

So I've been recording Part-Automation of some VSTi-Parameters that I attached before to Macro Knobs. This works as it should, after recording (via the Transport bar record) Studio One is reading the Part-Automation and moving the parameters on my Synth.

But as soon as I touch one of the automated while playback (not recording!) Macro Knobs it stops reading the parameter / knob I just touched. If I touch another knob it stops reading that one, too, both knobs are no longer automated. To make it start reading these automations I need to press stop and start again, which isn't ideal.

Not sure if it's a bug.