I’ve been running into this strange bug when I export my animation at a resolution different from the default 1141x646 (mainly just want 1080p). The first frame will have this transparent overlay in the lower left quadrant and will then leave behind these faint cross lines in the middle of the image for the following frames. It looks like it’s where the top right corner of the overlay was. I’ve tried locking the resolution when changing and multiple resolutions, as well as saving the animation as .avi and .png’s, but nothing has worked.
Does anyone know why this is happening or how I can fix it?