Isolate Jackson registry copies#920
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Jackson registry copy() returned the same mutable registry instance, so Env.extend() could share lazy type and enum registrations between parent and child environments. Create a fresh Jackson registry copy and rebuild the currently known type and enum descriptions into it, with tests covering preserved registrations and isolation of later explicit and lazy registrations.
XN137
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Jul 17, 2026
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Jackson registry copy() returned the same mutable registry instance, so Env.extend() could share lazy type and enum registrations between parent and child environments.
Create a fresh Jackson registry copy and rebuild the currently known type and enum descriptions into it, with tests covering preserved registrations and isolation of later explicit and lazy registrations.