DuplicateKeyException on save lazy loaded references

[MuravlevAS]

Mongo repository throws DuplicateKeyException when I use save() method with object that was lazily loaded
from @DocumentReference

spring-data-mongodb version: 4.5.1

Failing test in demo project that shows the bug:
https://github.com/MuravlevAS/spring-mongodb-reference-demo/blob/master/src/test/java/com/example/demo/Demo1ApplicationTests.java#L25-L45

[christophstrobl]

@MuravlevAS seems the demo is in a private repo.

[MuravlevAS]

@MuravlevAS seems the demo is in a private repo.

@christophstrobl I am so sorry. I have changed it to public. Do you have access now?

[christophstrobl]

Thank you for the reproducer - seems as if the EntityInformation does not extract the proxy target for the isNew check, which in turn will call insert leading to the error.