Hi @Spork,
I understand that the problem has its complexity, especially in being tested, but unfortunately it seems that the fix does not completely resolve the issue.
Apparently, there is still an anomalous behavior affecting the Mixer channels relating to the Stacks of a Part.
Consider the new version of the project:
SoloOnOffTest.vlprj (19.2 KB)
When opening the project, all Part of the Song appear:
At this point let’s enable the Solo state of a Mixer channel, for example the Song 1 channel in the Part 1, and notice that all the channels of all the parts correctly appear as:
Returning to Part 1 and deactivating the Solo state button, we obtain for Part 2-3-4-5 that the Mixer channel relating to the Stack in the part, i.e. the P-Stack channel, remains erroneously in the Mute state:
I would add that, in testing the fix released for version 1.4.52, I think I discovered another bug linked this time to the use of the Mute button, a bug for which I created the topic:
[1.4.52] Mute state that propagates through Group channels - VST Live - Steinberg Forums
I’m waiting for your further feedback, thanks.