pyramid-cubicweb #5343870 'uncommitable' connexion get commited, w error... [resolved]

In some cases, a connexion is uncommitable although there is no exception detectable at the request level, but pyramid_cubicweb still attempt to commit it.

I do not have a reproducible case, but I know I had the problem several times. When it happens, the original problem is shadowed by the error on the commit attempt.

done in0.3.0
load left0.000
closed by#a9940c6cd693 Rollback 'uncommitable' cnx
patchRollback 'uncommitable' cnx [applied]