See repro steps. The phantom references can be fixed by recompiling the child BP and saving it. Note that just loading ChildBP2 does not fix/remove the reference during compile-on-load, so it's a bit more of an issue than just 'bounce the editor after deleting an interface'.
Create InterfaceX with a function and an event
Create ParentBP
Have ParentBP implement InterfaceX, overriding a func from X
Create ChildBP1 inheriting from ParentBP
Create ChildBP2 inheriting from ParentBP
In ChildBP1, override a func from X
In ChildBP2, override a func from X
Save everything and close the editor.
Open the editor again and open ChildBP1 and ParentBP (but leave ChildBP2 unloaded).
Remove X from ParentBP, saying Yes to "would you like to transfer the interface functions to be part of your Blueprint"
Open reference viewer for InterfaceX
Expected:
No references exist
Actual:
References from both ChildBP1 and ChildBP2 exist
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-95398 in the post.
| 2 |
| Component | UE - Gameplay - Blueprint Editor |
|---|---|
| Affects Versions | 4.24, 4.25, 4.26 |
| Created | Jul 15, 2020 |
|---|---|
| Resolved | Jul 19, 2022 |
| Updated | Jul 19, 2022 |