I searched the forum to see whether this issue was discussed but couldn't find it, hope I'm not doubling.
The problem is as in the title: when I play a note when only, say, layer A is active and I keep that note pressed while switching to layer B, the note is held (i.e. as if HOLD is on). The only way of releasing this note is returning to A and playing notes *until the voice that is held is retriggered*. I cannot imagine how this would be as intended, but I'm happy to be proven wrong by one of you.
This behavior, by the way, has a more complicated (an unwanted by me) result when in either of the layers an arpeggiater is running.