@Aleksei Tirman [JB]
I can't actually, I've tried to create a sample app, but there is no error.
This happens from time to time, I don't really can handle it.
I have a multiplatform project, it happens constantly when my client is up and I shutdown a backend.
I use CBOR with KotlinxWebsocketConverter, it can cause a problem, I think.
Actually I have a lot of bugs with ws as active user of it. If you want, we could schedule a call, I will show you this problem and help you to investigate a problem.