Follow up of https://github.com/symfony/symfony/issues/34720
ManagerRegistry is able to reset entity managers, but I think we missed wiring this capability with the kernel.reset tag so that EM are reset between requests in long-running loops.
Given the dependency on LazyLoadingInterface, this should be done only when the interface is found of course.
I can take a look later today. Treating as a bug for now so we can also fix this in 1.12, otherwise we'd have this in 2.1 only.
Fixed in #1099, will be released in 1.12.3.
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I can take a look later today. Treating as a bug for now so we can also fix this in 1.12, otherwise we'd have this in 2.1 only.