Releasing left mouse button is seen as click on dropdown menus

Drop-down selection menus will select on mouse release. This only occurs for options under "Current Asset". I was able to click a drop-down, then hold down the left mouse button and let go over "Clear" to activate it.

1. Create a new top-down project
2. Open TopDownCharacter
3. Select the mesh component
4. Click and hold down the left mouse button over the Skeletal Mesh selection
5. While holding down the click, move over the "Clear" option
6. Release the mouse button