Followup on Transaction retries corrupt subdocument arrays

[vkarpov15]

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Issue

Copied from #14340 (comment):

Hey @vkarpov15 — we are seeing some strange behavior that I think is related to this issue.

Only in Jest, and on Mongoose v6.12.3, our subdocument arrays are being transformed into objects like the OP posted.

We're seeing this when using the findOneAndUpdate method. Probably happening elsewhere too, but that's where we're seeing it now. We do use transactions, but only when replica sets are available, and our testing does not implement any type of transactions at all.

Does this ring any bells for you?

[vkarpov15]

Followed up via email, looks like the user resolved this issue on their end. No indication this is a Mongoose issue.