Delete Unused Variables Does Not Remove Local Variables

Using the Delete Unused Variables option under the Edit tab of a blueprint does not remove local variables. Instead, it displays a "All variables are in use" error.

Occurs in 4.9.2 and 4.8.3 binary. Could not test in Main because of a crash related to [Link Removed].

1. Open Editor
2. Create a new blueprint
3. Add a couple of variables to the blueprint
4. Create a function
5. Add local variables to the function
6. Go to Edit->Delete Unused Variables

Result: Local variables remain and an error message displays

Expected: Unused local variables would be removed.