Sometimes serialization ignores @JsonProperty (Kotlin)

[comm1x]

We have 2 classes Cat and Dog. For Cat with property name someflag serialization will works fine. But for Dog - no.

data class Dog(@JsonProperty("is_active") val isActive: Boolean)
data class Cat(@JsonProperty("is_active") val someflag: Boolean)

val mapper = ObjectMapper()
mapper.registerModule(KotlinModule())

val dogJson = mapper.writeValueAsString(Dog(true))
val catJson = mapper.writeValueAsString(Cat(true))

// dogJson is {"active": true}        -- NOT OK, should be "is_active"
// catJson is {"is_active": true}     -- OK

We expect that dogJson and catJson will be {"is_active": true}, but dogJson is {"active": true} for unknown reason.

Jackson version:

implementation 'com.fasterxml.jackson.core:jackson-core:2.9.7'
implementation 'com.fasterxml.jackson.module:jackson-module-kotlin:2.9.6'

[comm1x]

Duplicate FasterXML/jackson-module-kotlin#80