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some BackwardEuler fixes#1977

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zingale wants to merge 1 commit intoAMReX-Astro:developmentfrom
zingale:be_fixes
Open

some BackwardEuler fixes#1977
zingale wants to merge 1 commit intoAMReX-Astro:developmentfrom
zingale:be_fixes

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@zingale zingale commented Apr 2, 2026

we were not always rolling back the solution on a single step failure. Now we do this for all errors.

we were possibly using a fine-step solution in the error estimator even if we were not successful in the fine step advance.

Note: I iterated with codex on this while debugging a burn failure.

we were not always rolling back the solution on a single step failure.
Now we do this for all errors.

we were possibly using a fine-step solution in the error estimator
even if we were not successful in the fine step advance.
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