Running examples from the heat equation tutorial and my own problems, I get
prob = discretize(pdesys,discretization)
ERROR: AssertionError: Number of offside points should not exceed the primary wind points
using Neumann and Robin BCs, but it succeeds using Dirichlet.
(also a small note: the PDE system specification line in these docs should update from
pdesys = PDESystem(eq,bcs,domains,[t,x],[u(t,x)])
to
@named pdesys = PDESystem(eq,bcs,domains,[t,x],[u(t,x)])