Interesting 
but that would lead to more problems if you need the named slot to be “private” just to get functionality, because you can fill in a named slot from anywhere which is not desired. If the width override property would just work as expected you could make nice “sliding” animations on the width property alone, but it’s too fragile to be used everywhere. Thanks for the testing though you are right unreal is going downhill fast sadly… I mostly post these issues in hopes to get some attention of a quality control team if any exists lol. Worst case EPIC goes the path of Bethesda games, letting the community mop up the issues…