Per title.

Also, its 'Gathered from' also shows four entities, they should have factoriopedia_alternative set to their parent.

Ah, I left that out since it's supposed to be hidden and players generally shouldn't be able to read its name/description, but you're right that it's there (and its 4 diagonal copies) in factoriopedia and as a selectable signal lol. Will roll an update soon (work + real life has me busy the next few days, I only just now saw your post). Thanks for the catch

Any chance of that update?