Creating component results in 'PIE level still referenced' error

[oasf]

Trying to add a custom component class to my character class, through PCIP on a TSubobjectPtr.
This class is instanced (and DefaultToInstanced in UCLASS), like I have been advised to do other places on the web...
Still, the editor crashes after PIE...
Is there anything specific one has to include in a component class? Am I missing some GC?

[oasf]

https://answers.unrealengine.com/que...eferenced.html

Put up a question on answer hub, as well...