Unable to Select Item from list in blueprints under certain conditions

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 This happens with not only enums, but any combo box. Another example is the "Create Event" where you can select a matching function. This is a problem with how this slate widget determines if it should be displayed above or below the combo box. 

1- Create an enum, add a lot of possible values (I reproduced with around 50)

2- Create a variable of this enum type in a blueprint, try to set it and see you can choose the value from the list.

3- Move the node to the bottom of the screen and zoom out (about 50%), and see you can't get to select the values down the list.