Mine has happened a few times outside of wake/sleep cycle. Also, when it does happen and I have the display resolution set to 2048x1280, it resizes back to the default 1792x1120, but keeps the screen drawn at the larger size, putting all the corners/edges off the screen and unreachable, including the menu and taskbar. Manually trying to reset it back to 2048x1280 in System Preferences does nothing except flash the screen as it tries to resize, but it always comes back still at 1792x1120. A reboot is the only fix that I have found.
Heading to the Apple Store in ~1 hour to see what they have to say. The fact that I hhaven't seen many complaints of this here or on Reddit makes me think it a super rare software bug, or hardware. My guess is that they will want to swap it since it is so early in the lifecycle of the product and video cards, but I'm not sure. I have bandwidth caps on my Internet, so a rebuild (even after a system-to-system copy) means iCloud and Photos has to do a whole lot of downloading.