Import Dialog Freezes Editor when hovering file type combobox when using 2 Displays with different scale

Unreal “freeze” when hovering the “file type combobox” in the Import Dialog when using 2 Displays (notebook + second hdmi display) if the Displays Scales are different and you hover the combo box in the second “not main” display.

Steps to Reproduce

  • In Windows Display Settings
  • Set Display 1 (main) Scale to 100%
  • Set Display 2 Scale to 125%
  • Right-click on Unreal Editor Content Browser
  • Import Assets…
  • Drag the Import Dialog to Display 2
  • Hover the “File Type” combobox
  • Unreal will freeze

To “unfrezze” it, set both Displays to the same scale in Windows Display Settings

  • It doesn’t matter which display Unreal Editor is
  • If the Import Dialog is half-screen (split between the displays)
    • And the “File Type” combo is split too
    • Hover the split part in the Main Display Works
    • Hover the split part in the Display 2 “freezes” it

Expected Result

Import Dialog File Type combobox should not freeze Unreal when using 2 Displays with different Windows Display Settings Scale

Observed Result

Unreal freezes

Platform(s)

Unreal 5.4.3 and 5.4.4
Windows 11 Pro
NVIDIA GeForce RTX 2060 Driver 560.94
2 Displays (notebook display and second HDMI display)
Notebook Lenovo Y540