Brief update.
We have a repro only on one system to date (MBA), but it's reliable. All the other systems we tested don't show the issue. Might it be connected to the Intel GPU drivers? Does anybody see this with AMD or NVidia (in high performance mode if dual GPU)?
We're suspicious since this appears to be system specific so we're going to remove any custom behaviour out of the DL SW to see if we can actually affect the issue.
In the meanwhile the most effective workaround is still the same: don't let those pixels go to waste and use the Mac's screen as an auxiliary screen.
Carlo
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