Steps to reproduce:
1. Make sure you have monitors of different DPI scalings (e.g 4k and 1080p)
2. Download and open the attached project
3. Enter Play mode
4. Click between different windows in different monitors
5. Observe console

Expected result: dpi reports consistently depending on a single factor( last (or first) created game window)
Actual result: dpi is based on where game windows are created, when and where scene windows are created, and when and where input is captured

Only reproducible on 5.6.1f1 due to Case 920841