Description
Per documentation (and intention), the TARGET, INDIVIDUAL, and AVERAGE surface binding models should default to PLANAR for backwards compatibility. However, currently they default to ISOTROPIC, due to lines 370-375 in material.rs.
Temporary Fix
To resolve issue, one can use the full input option:
surface_binding_model = {"PLANAR"={calculation="TARGET"}}
Instead of relying on the backwards compatible version.
To Reproduce
Set surface_binding_model in an input file to one of: TARGET, INDIVIDUAL, or AVERAGE
Expected behavior
The code should default to the planar surface binding model.