I have created an automated mute of track A.
When I solo track B track A goes solo too.
Could you describe the routing of these two Channels, please?
It’s 2 complete independent midi tracks. Is it so that a mute automation overrides the solo button?
Yes – this is an issue that has been confirmed by Steinberg. I reported it a couple months ago. It happens when you do mute automation on an instrument track, as you say. There is no way to avoid it at this time, until they fix it.