I upgraded to 6.0 Beta 4 this morning. Since then, Eliteangerous will not use the full surround screen, just one of the partitions set up by Displayfusion. I have never had this problem before this update. To use the full surround screen, I have to go into Displayfusion and remove the partitions, and set it to one big screen, which defeats the purpose of having the software to begin with.
As far as I know, we didn't change anything that should have affected this. If you roll back to 5.1.1 (http://www.displayfusion.com/Download) does everything work correctly again?
If so, could you update to the beta again, and send a debug log as per the steps below?
Enable debug logging on the Troubleshooting tab (set it to Logging: All Lines) and click Apply
Restart DisplayFusion
Reproduce the issue (please note the time so I'll know where to look in the log file)
Attach the %appdata%\DisplayFusion\DisplayFusion.log file to this topic (can be found by clicking the 'Open Log' button on the Troubleshooting tab)