PencilArrays.jl v0.11.0 is now being registered. In this version, Julia’s reduction operations such as minimum or maximum (actually, anything that uses mapreduce) are now computed globally (see PR).
Assuming that DifferentialEquations.jl calls something like maximum for step size control, this will hopefully fix the issue. @reidr let me know if it works after updating PencilArrays.jl.