Asset Picker does not always close after a selection in made

Asset Picker does not always close after a selection in made. If the asset picker were to open a tab that is part of the main window, the asset picker remains on screen

1. Open new blank project
2. Create a new game mode
3. Create a new player controller
4. Compile and save all
5. Use Ctrl+P to open asset picker
6. Press enter right away
7. Doc the Game Mode window next to the level tab (Make sure that these are the only two tabs open)
8. Close The Game Mode tab (Now the only tab should be the level tab)
9. Use Ctrl+P to open asset picker
10. Press enter right away
11. Notice that the Asset picker does not remove itself

Expected: The asset picker would disappear when an asset is selected
Result: If the asset picker were to open a tab that is part of the main window, the asset picker remains on screen

Asset Picker stays open in 4.14