Hm seems like a glitch, try logging out then back in. Also. Are you using rmod for that vehicle and skin?Just tried this a few minutes ago. Works for the most part (can see menu, can remove parts, parts drop in inventory) but with a glitch: removed parts don't actually get removed from the vehicle.
For example - I removed the LFWheel and it dropped in my inventory. The option to remove LFWheel was gone, and a new entry was created in the menu to repair LFWheel. Car was still fine to drive though, and the LFWheel was still visible on the car.
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