Summary
I discovered a potential issue between UEFN and the Fortnite client.
During an editing session in UEFN, it is possible to enable debug inputs through:
Debug Commands → Enable Debug Input
Once enabled, a controller button can be assigned to a debug command. In my case, I assigned the D-pad Up button to a debug command that gives gold coins.
The issue occurs if I close UEFN without disabling “Enable Debug Input” first.
Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
Other
Steps to Reproduce
1- Open UEFN and start an editing session.
2- Go to Debug Commands.
3- Enable Enable Debug Input.
4- Assign a controller button, for example D-pad Up, to a debug command.
5- Close UEFN without disabling Enable Debug Input.
6- Launch Fortnite normally.
7- Enter a Battle Royale match.
8- Try to use the D-pad Up button.
Expected Result
The D-pad Up button should work normally according to Fortnite’s default controller bindings, including opening the inventory.
Observed Result
The D-pad Up button no longer works correctly in Fortnite Battle Royale.
Platform(s)
PC Windows 11
Additional Notes
The issue appears to be related to closing UEFN while Enable Debug Input is still enabled.
This could potentially affect other controller buttons, debug commands, or Fortnite experiences as well, not just the D-pad Up button.
It may be worth checking whether UEFN’s debug input state is properly reset when UEFN is closed, so that debug inputs cannot interfere with the Fortnite client afterward.