yup, i edited C:\Program Files\Eagle Dynamics\DCS World OpenBeta\Mods\aircraft\FA-18C\Cockpit\Scripts\Multipurpose_Display_Group\MDI_IP1556A\indicator\MDI_left_init.lua and MDI_right_init.lua files
changed try_find_assigned_viewport("RIGHT_MFCD")
to
try_find_assigned_viewport("F18RIGHT_MFCD")
then it can't find viewport and everything works as it should with other modules without exporting f18 module.
passes IC check.