mpi issue with new wave boundary implementation (previously ihfoam)

I noticed an issue with a case using the new wave boundary implementation in the interfoam solver v1706. The simulation unexpectedly aborts before normal completion: mpirun noticed that process rank 6 with PID 0 on node nav08 exited on signal 8 (Floating point exception).

The bug is probably related with MPI since running the same case in serial mode does not provoke this error.