Renaming a Struct variable that is used in a Widget BP creates 'Warning: Unknown property in' warnings in the Output Log

Renaming a Struct variable that is used in a Widget BP creates 'Warning: Unknown property in' warnings in the Output Log

User Description:

I think this should be brought up as these seems to be a bug, after changing some variables in a blueprint Structure the log posts a load of warnings, and these come up every time i compile blueprint that use these Structures, my currently project logs around 200+ lines of these as i have changed/edited or added variables to my Structures.

1. Download the attached test project
2. Windows tab > Developer Tools > Output Log
3. Right-click and clear the log
4. In the Content Browser, Open the 'NewWidgetBlueprint'
5. Press 'Compile'
6. Look at the Output Log

Results: The Output Log will be spammed with 'Warning: Unknown property in' warnings

Expected: For the blueprint to compile without these warnings

Repro from scratch:
1. Create a Struct bp
2. Change the variable to a 'Linear Color' type > Save
3. Create a Widget BP
4. Under the Designer tab > Palette > Add an 'Image' to the Hierarchy panel nested under the 'Canvas Panel'
5. With the 'Image' selected, go to the Details panel > Appearance > Color and Opacity > Create Binding
6. Under the Graph tab > My Blueprint panel > Create a Local Variable of the Struct you created
7. Add a get of the variable > Break it > Connect it to the Return node (See attached screenshot)
8. Compile & save
9. Back in the editor, Windows tab > Developer Tools > Output Log
10. Go back into the struct > Rename the variable > Save
11. Go back into the Widget bp and compile it

Results: The Output Log will contain a 'Warning: Unknown property in' warning

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