All of the newer versions past 2.4.6 are messed up, including the newest. Multiple people are having the issue of getting a black screen in OBS Studio while using OBS Studio and OpenLP. Also, regarding the same issue, my network pjlink projectors do not see the projected screen, but only in version 2.4.6 or older. It just blips the live screen for a nano second, then shows the desktop(even though show desktop button is not selected). There is some sort of display issue with OpenLP, in the versions newer than 2.4.6.
No one will listen to us!!!