Can you make this work without the custom attribute?

[marcusx2]

I don't know how Odin inspector does it, but they support serialize reference in the inspector as well out of the box, without the need of modifying code, as if it was a Unity native feature.

[AlexeyTaranov]

I don't know how Odin works, but i will think about how to do it

[marcusx2]

Thanks! Appreciate it.

[AlexeyTaranov]

I don't think it's really necessary. If a SerializeReference is used here, then please indicate that a dropdown is used too. Using SerializeReference everywhere is also not the best solution.