Stage visualization issues [closed]

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I've just loaded groovy onto my new machine and am trying to run some old code (using rosbuild, but that's beside the point) and have noticed some visualization issues with stage that hadn't cropped up before. For some reason the stage window is malformed, there are random pixels occluding it when its open, and they change depending on how much they zoom (I can't upload a photo yet since my karma isn't high enough). Has anyone else run into this, or have an idea about why its happening?