On Thu, 15 Jun 2017, Michael Povolotskyi wrote:

All works now.
I had to impose use "heterogeneously_constrain" instead of "constrain".
Is this a new feature?

It dates back to the introduction of DirichletBoundary.  Often (e.g.
when solving for a Krylov step, or a solution sensitivity) you want to
apply homogeneous versions of your constraint equations, so
constrain_element_* still does that.
---
Roy

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