When using the Delete key to delete a key frame for an animation in UMG the entire timeline is removed

When using the delete key to remove a key frame from an animation timeline the entire timeline is removed.

1. Open editor
2. Create a new Widget Blueprint
   Right click content browser > User Interface > Widget blueprint
3. Add a text block to the designer tab
   Type text in the search field of the palette panel > Drag and drop "Text" widget into the Designer window
4. Add a new animation timeline
   Click the [+ New] button in the animation panel
5. Click "Auto Key"
6. Change the color of the text block
   Click the color and opacity bar to bring up the color picker window > select a color
7. Move the timeline forward
8. Change the color again
   Click the color and opacity bar to bring up the color picker window > select a color
9. Select a key frame
10. Press the delete key
11. Notice the entire time line is now gone

UE4.7 Double delete tracks/keyframe bugs w/ Widget animions