Why some properties inherited from parent class was set to 'None', including those inherited from ACharater, such as Mesh, Character Movement, etc. Is this a bug?

And because those properties is not editable, I can not reset them to a default value. Because โ€œnew users can only put one embedded media item in a post.โ€ I can only post one screenshot.

And because of this issue, Details panel display nothing.

I have spent a night and finally found this issue, is this a bug, or it was caused by my mistakes? My English is not very well, hope you can understand what I mean :slight_smile:

Details panel of Mesh is totally empty. Same as Character Movement, Capsule Component, and some properties inherited from the class created in C++ by myself. And those properties inherited from my created class, I can set UPROPERTY(EditDefaultsOnly) and then reset them in editor to solve this issue. But those from ACharacter or other classes implemented by Unreal itself, I can do nothing.