With ReStock installed  Without ReStock (and ReStock+)  Minimal case  --- Bug is reproducible with only Hangar and ReStock (plus dependencies) installed. Steps to reproduce: 1. Install Hangar and ReStock 2. Attempt to put Gigantor XL in any hangar 3. Fail. KSP version: 1.8.1.2694, no DLC Mod version: 3.5.0