Dropdowns display incorrectly in non 1:1 zoom in BP on Mac and PC

On a Mac in UE4.14, drop down menus on the appropriate nodes will not display correctly when the Event Graph is zoomed out below a 1:1 ratio.

Regression: Does not occur in UE4:13

1. Open any Blueprint on a Mac or PC in UE4.14
2. In the Event Graph Zoom out from 1:1 to -4 or -5 (displayed in upper left of graph title)
3. Add "Get All Actors of a Class" Node
4. Mouse over down arrow in Class Selector Box (See attached image)
   RESULT: An out of scale/pixelated search field appears
   EXPECTED: A dropdown menu with a non-pixelated search field at a readable scale

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