After upgrading java:4-java11-appservice-stage3, Jackson introspection is failing

[amhuhn2]

Jackson Databind is being used to instantiate a POJO based on a Javascript string, like this:

CopyBlobConf copyBlobConf = Mapper.jsonMapper().readValue(body, CopyBlobConf.class);

This code worked prior to May 6, 2024. However, after our Java runtime was upgraded by Azure, we're now receiving the following error:

Error: Cannot construct instance of com.<company>.data.model.copy.CopyBlobConf (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value

Is there a security feature that may have been enabled with the March __ release that may have broken Jackson introspection?

Here is the log from our app function that shows the upgrade of the java runtime:

2024-05-07T03:05:51.552Z INFO - Digest: sha256:b57ab4c31547218c65a747fd3762930f07100cf3e939782db4a0b71f0f85dafd
2024-05-07T03:05:51.556Z INFO - Status: Downloaded newer image for mcr.microsoft.com/azure-functions/java:4-java11-appservice-stage3