Hi Gavalakis, thanks for the response,
2. It is an asset graph
3. As far as I’ve seen it happens sometimes when I do a reimport all or when I import a new asset from unity store, but not always.
In addition, This is just a guess but I think it is related to name conflict, it happened to me for an enum I called “AnimationState”, I think it might have conflicted with other “AnimationState” Enums, (the default unity one, Animancer asset has one, BetterUI asset has one)
As I imported BetterUI I think the new enum they have caused node canvas to lose a reference or something, I changed the enum name for now to something more specific to my project MBAnimationState to hopefully fix this for good, but if I do ever need to use something that has a duplicate, let’s say from another package, this would still be an issue as I will be unable to change the name.