Describe the bug
This bug is a repair bug, you can't repair any vehicles. The reason for this is your parts in your inventory disappear when you go into the repair menu of any vehicle if the wing of a plane has come off, or tires of a car have come off.

Pretty Much, when you go into the repair menu of any vehicle and try to repair that part, it takes the parts from your inventory so you can't repair it.

To Reproduce
Steps to reproduce the behaviour:

1. Get any Plane
2. Crash it Slightly Until Something Breaks
3. Get the Vehicle Parts you need to repair it with
4. Every time you go into the repair options with those vehicle parts, it disappears from your inventory

Expected behaviour
When I was repairing my plane in survival (because I accidentally crash it). I went and made new parts for it, as soon as I go onto the repair menu, it looks extremely bugged. Then I realised when I clicked repair, my parts were missing. I did this over and over without myself even knowing until about the third time. I thought it was some of my mods interfering with it, but in fact, it isn't. I uninstalled the rest of my mods I had and the problem kept consisting

Screenshots

Versions (please complete the following information):\

• Forge: 14.23.5.2797
• Flan's Mod: 5.5.2
• Minecraft: 1.12.2