Gavril MD-Series and T-Series Cargo Box variant rollup door issue

Hello, I noticed this issue with the MD60 and MD70 series. Every time I go uphill or downhill, the roll-up door gets damaged. It happens if open it and close it too, with the vehicle still. I saw it happening in Career Mode and Free roam. It doesn't happen with the standard cargo doors.

 

I discovered something, it also happens with the T-Series TC82s Cargo Box truck. I tested this "bug" on both the MD-60 and on the T-C82s trucks and I believe it happens with the default configurations only. That is, when you spawn them in Free Roam mode or buy them in Career Mode and opt to not modify their original rollup door. I say this because I opted for the standard cargo doors in Free Roam and the right after choose again the rollup door and the "bug" was gone!