I tested this thoroughly and came to a conclusion. The only time that the artwork will be missing is when you use the pinch to zoom on your trackpad or possibly on your Wacom tablets. If I use the normal zoom (cmd+spacebar+left click and drag) on my mac it never does that. If I start using the pinch to zoom on my trackpad either on my late 2013 Macbook pro or my 2014 iMac 5K dislpay, it starts to act up again. Since I've been using the (cmd+space bar) shortcut I never had this issue. It would be fun if Adobe could fix this issue with the track pad cause it would be very convenient to use it in this way.
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