P.108A missing from the tech tree?

I noticed earlier today, whilst remodeling my Italian ground lineup, that the P.108A serie 2 has disappeared from the tech tree. It’s still ingame, you can still crew it from the drop-down menus on the lineup bar, but it’s completely invisible in the tech tree. Is this a hidden removal, or just a general ‘woopsie’ type bug?

It’s in a folder with Breda 88.