Black areas in translucent materual

i just converted a 4.25 project to 4.26 and some of my transllucent materials are rendering this weird way with see thru areas in the material that should be solid - tried increasing translucent priority on obj with no sucess -
it doesnt matter what translucent material i put on it these black areas are still there

so i’ll say that again it doesnt matter what translucent or addative material i put on it does the same thing

so is there some cvar that could help or ???