Hi! I am currently migrating a project from Ktor-1.6.8/Kotlin-1.6.10 to Ktor-2.0.0/Kotlin-1.6.20 and something has changed with the ClassLoader-behavior: I cannot cast a received object from the (Apache-ActiveMQ-Artemis-)message-queue to the corresponding DTO anymore. In Ktor-1.6.8 an "OverridingClassLoader" was being used while in Ktor-2.0.0 it is "ClassLoader@AppClassLoader". How can I fix this to get rid of the ClassCastException?

Could you log an issue? I will take a look

@e5l https://youtrack.jetbrains.com/issue/KTOR-4164

It also would be great if you could log some reproducer

The project itself is closed source, and quick re-producing it is rather difficult. You need a message-producer-app, a message-consumer-app, the DTOs and the Artemis-message-queue itself set-up ...