This morning we woke up to some great news. The latest Windows 10 Insider Build (build 21287 and higher) resolves the issue of application windows getting moved around when computers with DisplayPort monitors resume from sleep mode!

We've had a chance to test out this fix here, and it works great! More details on the fix and a demonstration can be found on Michelle Xiong's blog: Avoid Annoying Unexpected App Rearrangement – Your PC Can Sleep Without Nightmares

Please note that Windows 10 Insider Builds are early access previews, and as such, they will have a few (or many!) bugs, so update at your own risk.

Enjoy!