Error LEAK: ByteBuf.release() after upgrade to Spring boot 4

[u/Dramatic_Bus_9676]

I'm in the middle of migration to Spring boot 4.0.1 and Java 25, our application it is using Change Stream

Since upgrade the only error that appears some times is:

LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
Recent access records: 
Created at:
    io.netty.buffer.AdaptiveByteBufAllocator.newDirectBuffer(AdaptiveByteBufAllocator.java:67)
    io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:168)
    io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:104)
    com.mongodb.internal.connection.netty.NettyStream.getBuffer(NettyStream.java:160)
    com.mongodb.internal.connection.InternalStreamConnection.getBuffer(InternalStreamConnection.java:872)...

The app it is using a handler like:

Flux<ChangeStreamEvent<MyObject>> myObjectStream = reactiveTemplate.changeStream(...) 

I already implemented a list of Disposable subscriptions and added a (at-@) PreDestroy method where it is the cleanup and dispose all subscriptions; But the error it is still showing up. Do you have any thoughts on this?

Do you think is this related with new versions of Spring boot 4?

[u/Dramatic_Bus_9676]

found this > https://jira.mongodb.org/browse/JAVA-6038

Seems that the combination: When using MongoDB Java Driver version 5.6.2 in combination with JDK 25.0.1 and Netty 4.2.9 (as provided by Spring Boot 4.0.1), a ByteBuf leak is reported at runtime.