We have been using 2.9.2 successfully for the last few months.
Been using Chord View, Stage View via web browsers and have been using the MAIN view on a HDMI on screen 2.
Now after a Windows Update the main view is on my PC and not on my display over HDMI.
Everything looks correct Screen 1 is Primary, Screen 2 is Extended (Works perfect with all applications other than Open Lp)
Open LP shows Screen 1 and Screen 2 and properly identifies them as such but as soon as I "Go Live" it basically locks me up as my main screen is now the empty projection screen.
I have seen this behaviour on a Surface Pro notebook running the Beta 1 of 2.9.2
I haven't tried the latest beta due to the bug with bibles etc.