Renaming the function for a bound event will cause the event to stop working

A user found that when renaming a binding for a mouse down event for a border widget that the event would no longer fire off. They only worked as long as the default name was used.

1. Open a new project
2. Create a new widget blueprint
3. Open the widget blueprint
4. Add a border to the designer tab
5. Scroll to the bottom of the details panel for the border
6. Create a new binding for mouse down
7. Place a print string in the function
8. Compile and save
9. Open the level blueprint
10. Add the widget to the viewport and show mouse (image for reference)
11. Click PIE
12. Click border a few times
13. Notice that the print string fires off (expected)
14. Stop PIE
15. Open the Widget blueprint again
16. Change the name of the mouse down function to "MDFun"
17. Compile and save
18. Click PIE
19. Click the border a few times
20. Notice that the print string no longer fires off

Expected: Print string should fire when clicking the border on screen
Result: the Print string does not fire after changing the name of the mouse down function