Hi!
There is such a situation. The track is connected to the layer via a virtual MIDI channel, and when the solo is enabled on the track, the mute is enabled on the layer, making the solo useless. If it is declared that layers and tracks are different structures, then the solo and muting of tracks should be independent of the solo and muting of layers. Perhaps because of this connection and remain arbitrarily turned on muting on layers.
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In addition. I tried to get around this situation. I turned on the solo on the output channel of the mixer, hoping that only the channel would work. The mute was set on the linked tracks and layers. And then it got even more interesting: after removing the solo from the mixer, the mute fragments remained on all the layers in the parts. This is how uncontrollable mutes appear. I believe that the mixer, tracks, and layers should be separate to avoid such complex situations. If the track is muted, the signal will not go to either the layer or the mixer.
Thus, the simple task of exporting a single midi track to an audio file has turned into a problem that I have been trying to solve for an hour, but all my attempts have resulted in a blockage. The last resort is to break the chain and export the track directly to the output.