Comment (by Roland Haas):

I cannot reproduce this with the provided thorn and parfile. The parfile seems to be for a different setup. Eg the thorn name differs, the thorn in the parfile has parameters while the thorn in the tarball does not, the parfile contains @FOO@ placeholders, the parfile has no mesh refinement or MoL active but the ticket description mentions both being required.

I have a guess what is going on, but without a reproducer will not be able to make headway fixing this.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2534/evolution-of-grid-arrays-with-mol-no