I have 3 monitors on my slave.
The left hand one is portrait, the other two landscape.
The top of the portrait screen "pokes above" the top of the landscape ones.
I have a further set of 3 monitors, all in portrait, 'above' these 3 on the server.
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Observations:
I can only get from the lower set of 3 screens to the upper 3 through the "top" of the portrait monitor - if I try to go through the top of the 2 landscape monitors, nothing happens..
All transitions "down" from the slave monitors to the server ones arrive in the lower screens &q