Summary
UEFN 5.7 UI issue where editor windows do not open, immediately close, or appear missing in the “Windows” menu. Panels behave inconsistently and the UI becomes partially unresponsive.
Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
UI/Tools
Steps to Reproduce
- Open UEFN 5.7 normally.
- Load any project (in my case, a standard Creative island).
- Try to open windows from the top “Windows” menu (Content Browser, Details, World Outliner, Sequencer, etc.).
- Some windows do not open, or open and immediately close.
- Sometimes the UI becomes unresponsive: buttons stop reacting or panels freeze.
- After a few attempts, tools like “Content Browser”, “Details”, or “World Partition” disappear completely from the menu.
- Restarting UEFN, restarting Windows, reinstalling UEFN, or deleting Saved/Intermediate does NOT fix the issue.
Expected Result
All editor windows and panels should open normally when selected from the “Windows” menu, remain visible, and stay responsive. The UI should behave consistently and allow normal interaction.
Observed Result
Many editor windows do not open, instantly close, or disappear from the “Windows” menu. The UI becomes partially unresponsive, making it impossible to work. Only some windows open randomly, and the editor behaves inconsistently.
Platform(s)
windows
Island Code
Not applicable
Video
No video available yet. I can record one if needed.
Additional Notes
This issue started after updating to UEFN 5.7. I already tried restarting Windows, reinstalling UEFN, deleting Saved and Intermediate folders, resetting UI layout, and disabling Multitasking settings in Windows. The problem persists and makes the editor almost unusable. Any help or confirmation if this is a known issue would be appreciated.