Fields defined in scala object and trait are not serialized #495
Description
In the process of bumping Jackson version from 2.11.2 to 2.12.0, we have noticed this behavior change:
trait TraitWithoutJsonProperty {
val name = "name1"
}
object ObjectWithoutJsonProperty extends TraitWithoutJsonProperty {
val value = "value1"
}
This ObjectWithoutJsonProperty on 2.11.2 will be serialized with fields value, but not on 2.12.0.
2.11.2 output: {"value":"value1","name":"name1"}
2.12.0 output: {}
We also find out that adding @JsonProperty annotation can write the fields, however, it can be hard for us to detect our customer's usage.
The full reproduce example is located here.
Thank you!