So... The only reason I found this was that I got a new desktop PC and was working on utilizing the software there vs on my laptop.
Desktop is a dual monitor Display:
Monitor 1:2560x1600
Monitor 2: 1920x1080
When I loaded up the dual monitor setup I had previously created on a different monitor setup (1920x1080 on both monitors) part of one of the windows (doesnt matter which one) is off screen. This causes xlights to become unresponsive and the window dim's and the cursor just spins... Only resolution is to restart (forcibly) the application. Other way to cause same behavior is to move a window around and make a part of it go off screen.. this also causes the application to become unresponsive and also locks up the application.
PC Specs:
Ryzen 7 2700x
32GB ram
MSI Motherboard
MSI Geforce RTX 2080 graphics card...
Update: it now locks up every time I open the perspective "Upstairs"