Major Game breaking UE5 bug, mesh loses its collision and only works in UE4

[PRESSURE2000]

I upgraded my UE4 project to UE5.3.2 and my meshes have broken collision

this is how the player collision looks in UE4 and UE5

this makes it so I cant use the NAV mesh

does anyone know why this is and how to fix it?

[PRESSURE2000]

it seems like this lines are being created in UE5 and its breaking my collision

can someone please tell me how to fix this?