Editing a Spline as part of a Blueprint Construction Script .. (UE5.4)

I hope this is a bug and will be resolved by Epic, because at best doing anything extra is a workaround and not a solution and having real time feedback is really required. If the real time feedback becomes slow, it’s easy to control it by sectioning things off.

I just need to know if this is in fact a bug or not because I have some Marketplace content that uses this and are now slightly broken and unfixable and I can’t officially give 5.4 support because of it.