Omnisphere volume sliders not syncing

It used to work but now it’s broken :frowning:
When I move volume slider on Cubase mixer on instrument or midi track for Omnisphere the corresponding track volume in the Omnisphere mixer page is not responding. Or visa versa.

Any advice how to get that sync working again?

You may want to check your settings in the Omnisphere menu “Midi Learn and Automation”. And if necessary, have Omnisphere re-learn those midi volume commands.