Invisible objects in viewports

I’m inheriting a blueprint class that set a flipbook and several other stuff in its construction script.
Trouble is, for a certain child, it works in game and the editor view, but the objects won’t appear in the editor viewport.
See the screenshots:

This is the construction script of the parent class:

It’s working for the Goomba, even in the viewport:

But for the Koopa it’s not working in the viewport

But showing in game:

What is this sorcery? I need to be able to edit the Koopa’s shell hitboxes so i need to be able to see it in the viewport

I tried relaunching Unreal Editor, to no avail

Any help would be appreciated :slight_smile: