Create a new project with 4.11 preview 6.
Blueprint or C++, doesn’t matter.
Then, open a blueprint (like the level blueprint for example).
Add a Custom Event (a function, macro or even something like a ForEach node would work as well, in the next steps I have assume you’ve created a custom event).
Add a parameter (an ‘input’) to the event.
Change the parameter type to a struct (I used ‘Anchors’ for example, but any struct will do).
Rightclick on the parameter in the event and click on ‘Split Struct Pin’ (see screenshot).
Press compile.
See the warning.
