Placed PDFs on high quality display disappear when panning or moving objects
I often work with marked up documents that I scan in, place on a background layer and then draw on top of: annotated maps and the like. I place the PDF, set the display performance to high quality, and off I go. In the past (talking the days of the Mac G3 and InDesign 2.0) this was painfully slow and unworkable, but these days the lag isn't too bad. HOWEVER. I do a lot of panning and a lot of dragging other objects around the page. Often when you let the mouse go, the placed PDF vanishes. To get it to display again you have to either toggle preview mode off then on again (I usually work in preview mode) or zoom in or out: basically, force a screen redraw. Not too much of a hassle, I grant you, but it's finally got me irritated enough to ask: why?