Detailed description of the issue: Splitting a struct in nodes that allow adding multiple elements results in problems when you use the “remove pin” option on an individual element from the struct. For example, if you have 3 structs in a sum and you remove an element in split struct 2, you won’t be able to remove element 3 or any of the remaining elements from the split struct.
I was able to reproduce this issue on our end. I have written up a report ( UE-9912) and I have submitted it to the developers for further consideration. I will provide updates with any pertinent information as it becomes available. Thank you for your time and information.