Repro steps:
- Make a custom UMG widget, let’s call it CustomButton.
- Place multiple of these CustomButtons in a UMG menu.
- Set up explicit navigation between them in the UMG menu (in the navigation section, choose explicit for left/up/right/down, and type in the other CustomButton’s name)
- Modify CustomButton, recompile its blueprint.
- Notice that the explicit navigation you have set up in the UMG menu was not retained and needs to be set up again.