I have a vector drawing with an "image" that I dragged into it. When I close the drawing then reopen it the image layer comes up severely pixelated (shown in the first example). Then if I hide it and unhide it the image comes up as it should (shown in the second example).
Edited: I just noticed that I have to select the layer then make it not visible then visible for the pixilation to correct itself. Just clicking the visibility button didn't do it.