Does this only happen with the File Browser, or also with other "Windows" (like Preferences, View Render, etc.)?

Does the File Browser work when opened in an Editor (for example, if you replace the 3D View with a File Browser)?

A friend printed it for me, the 3d model is from Thingiverse. Can't remember the printer, maybe an Elegoo Mars 3 or a similar model

Thanks ! The rig is based on the UE4 Mannequin, so basically it is compatible with every humanoid animation from the Unreal Marketplace. (I don't do characters animations myself) Unfortunately I can't post GIFs here...

Thank you ! Here is another picture