KSP 1.7, KIS 1.19, en-us localization. In flight the per seat inventories text label is poorly formatted on parts. They have the form "of a Name Inventory" instead of just "Name's Inventory". Note the possessive "s" is missing in addition to the leading "of a" or "of an". The EVA inventory is fine. This is new behavior, it wasn't obvious to me what was wrong in the code.

See the following image: https://i.imgur.com/mfp9yrk.png

It seems Lingoona version has changed in KSP 1.7, and now it treats "<<1>>'s" as "of a Name". Do you remember any place in the core game where notation "Name's"? I'll can check how they deal with it and fix the localization.

Figured. It's indeed a change in Lingoona. Fix is simple. In the localization string #kisLOC_00030 the apostrophe symbol needs to be replaced by a back single-quote symbol.

#kisLOC_00030 = <<1>>`s inventory

And it's likely not the only case.