BUG: makeFaMesh fails with the random decomposition method

Summary

makeFaMesh fails when the random decomposition method is used.

Steps to reproduce

cd $FOAM_TUTORIALS/finiteArea/liquidFilmFoam/cylinder
change method simple; to method random; in system/decomposeParDict
./Allrun-parallel

What is the current bug behaviour?

Floating point exception.

Environment information

    base1    = develop
    api      = 2106
    patch    = 0
    HEAD     = 70c697fdcb
    version  = com
    compiler = Clang (system)
             = clang version 9.0.1 
    mpi      = SYSTEMOPENMPI
             = mpirun (Open MPI) 1.10.7.0.5e373bf1fd
    OS       = Description:     openSUSE Leap 15.1
    opts     = linux64ClangDPInt32Opt