My composition window goes black if it is above a certain width. I've attached two images to the post to show what I mean. I can see and work fine if the window is small, but once I pass a certain threshold resizing the window the whole window goes black. Any suggestions on how to fix this. Having to work in a small window is very annoying.
You're working at quarter resolution and 100% zoom. That sure is gonna mess with hardware accelerated drawing functions at times, so start by checking those settings. Update your system's graphics driver if need be.