Hrm, further investigation suggests this is in some fashion a known problem with flicking between QT versions:
https://bugreports.qt.io/browse/QTBUG-82105
I haven’t looked any further into it, but my guess is that this might just be happening because in this update you moved from qt 5.11 to 5.12. Given that the launcher isn’t exiting properly, the two running versions may have been fighting with each other.
Based on what I’m reading in that bug report, I would guess that provided you stay on the current beta and do n...
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