Unsolved Missing fender?

Allright it happened to me one time but after constantly ctrl+r it fixed it self, but for my friend takumi, it still not works, so some modder or tdev or someone knows why this bug happens?
here is a pic taken by @Fujiwara Takumi showing the issue:

the fender is selected and on the car, it has its mesh named correctly and all, it works perfectly for me, so someone knows why this happens and how to fix it?

 

Check that the flexbody is grouped to the correct nodegroup, otherwise it won't show up and won't show a console error either.

Code:

"flexbodies": [
         ["mesh", "[group]:", "nonFlexMaterials"],
         ["fullsize_fender_R", ["fullsize_fender_R"]],
             //                              ^^^^^^^^^^^^^^^^^^
 ],

Code:

"nodes": [
         ["id", "posX", "posY", "posZ"],
         //--FENDER--
         //r
         {"nodeMaterial":"|NM_METAL"},
         {"frictionCoef":0.5},
         {"collision":true}
         {"selfCollision":true},
         {"group":"fullsize_fender_R"},
//                       ^^^^^^^^^^^^^^^^^
         {"nodeWeight":1.24},
         ["fe1r", -0.94, -0.83, 0.25],
         ["fe2r", -0.94, -1.04, 0.25],
         ["fe3r", -0.98, -0.84, 0.60],
         ["fe4r", -0.97, -1.45, 0.71],
         ["fe5r", -0.94, -1.81, 0.58],
         ["fe6r", -0.91, -1.99, 0.58],
         ["fe7r", -0.91, -0.80, 0.95],
         ["fe8r", -0.89, -1.47, 0.91],
         ["fe9r", -0.86, -1.87, 0.85],
         ["fe10r", -0.81, -2.13, 0.77],
         ["fe11r", -0.78, -2.12, 0.33],
],

 

The fender jbeam is still a sunburst one, i dont modifyed it yet, and the flexbody match with the mesh name but whats funny is that is only this fender, i copyed the jbeam and used it to another fender and it doenst happened

 

Any errors relating to it in console?

 

No errors in the console

 

Try taking a look at this and see if you can find anything helpful, especially in the "flexbody won't show up" section: https://wiki.beamng.com/Vehicle_Modding_Common_Problems