Steve, I'll try to take a look at this today, our workaround is still in place so it isn't affecting us directly either way. I don't imagine you ran the test from the pull request?
I was going to log something similar to HHH-7688 but it's a bit different as that change only covers the NonBatchingBatch where in my case it was the BatchingBatch impl causing me the grief.
The full details got lost in my notes and it also involved using a SavePoint extension so I wasn't sure if I was inducing some of my own pain at the time but I think...
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