The Category setting for widgets return to "Default" after compiling

When setting up categories for your widgets in the Event graph the categories will revert back to default after compiling the blueprint

1. Open Editor
2. Create new widget blueprint
3. Add 3 buttons to the designer tab
4. Open event graph
5. Select each button and change it's category to "Button"
6. Click the event graph (Notice the buttons are categorized under button)
7. Click the compile button
8. Notice the "Button" category no longer exists

Expected: The buttons would remain under the buttons category
Result: Category is lot on compile