Topology Optimization - Geometric Overhang Cconstraint

Hello all,

I am working on the 2D cantilever beam with the objective of optimizing it for minimum compliance and less volume. In the optimization module, there's an option which says "Create geometric constraints> Overhang Control (topology) > overhang angle" which is set to default to 45 and the process runs fine. However if I change the angle in increments of 90 (135 or 225), the solver aborts the optimization job saying Tosca failed to run the job. I am unable to identify the reason for this error.