@mtrebon,
Thanks for checking in. Not yet.
We've delayed the migration to 5.2 while working on integrating Volto on 5.1.
I will eventually need to face it, but need to ship some value for the project in the meantime.
In the meantime, I don't know if a badly stored datetime is related, but I'm getting issues rebuilding the catalog. It consistently interrupts a rebuild with this error:
SyntaxError("Unable to parse ((DateTime('2020/12/01 11:55:00 UTC'),),), {}",) (Also, the following error occurred while attempting to render the standard error message, please see the event log for full details: Unable to parse ((DateTime('2020/12/01 11:55:00 UTC'),),), {})