Size Box - Set Width / Set Height Override Not Working

Engine Version: 4.27

This is a fairly straightfoward question that I haven’t been able to find an answer to so far (that’s been posted), when setting the Width and Height Overrides in both Designer or in Graph, my size box (contains an Overlay with an Image child) does not reflect this change.
Currently I’ve bound Left and Right triggers to increase these values in game, and while the values ARE changing, this is not reflected on the Size Box itself visually.

Is there any potential config options I have to be aware about or is the UI element just kinda broken?