Hibernate reactive with panache project throws ClassCastException in dev mode

[ScientistPun]

Describe the bug

I use hibernate reactive with panache to do my database work. When use two seccessive invocation of project on the same projection class in dev mode, it throws ClassCastException.

Expected behavior

Don't throw

Actual behavior

It throws ClassCastException

To Reproduce

Steps to reproduce the behavior:

1. Write an Entity (e.g. E)
2. Write a projection class (e.g. P)
3. Project the class for the entity in Panache transaction twice by flatMap
4. Start quarkus dev
5. Modify something to let quarkus dev relaod
6. It throws ClassCastException saying that P cannot be cast to P. It indicates that the same class P are from two different instances of io.quarkus.bootstrap.classloading.QuarkusClassLoader

Configuration

# Add your application.properties here, if applicable.

Screenshots

Environment (please complete the following information):

Output of uname -a or ver

Output of java -version

GraalVM version (if different from Java)

Quarkus version or git rev

Build tool (ie. output of mvnw --version or gradlew --version)

Additional context

(Add any other context about the problem here.)

[quarkus-bot]

/cc @DavideD, @FroMage, @Sanne, @gavinking, @loicmathieu

[geoand]

What version of Quarkus are you seeing this issue in (asking because various similar issues have already been fixed)?

Can you attach a sample project that demonstrates this error please (mentioning this because it's important we have an exact reproducer as this could be caused by various things)?

[qiuhw]

Hi, the bug reporter is my workmate.

What version of Quarkus are you seeing this issue in (asking because various similar issues have already been fixed)?

We use 1.13.4.Final the latest stable version.

Can you attach a sample project that demonstrates this error please (mentioning this because it's important we have an exact reproducer as this could be caused by various things)?

The sample project is attached

bug-demo.gz

[qiuhw]

The problem also exists in 1.13.5.Final, 1.13.6.Final and 2.0.0.CR2.

[Sanne]

I think this might be fixed in Quarkus main now as consequence of fixing #18875

But I can't try it again currently :) @DavideD could you test it?

[DavideD]

Yes, I will have a look

[DavideD]

I can confirm the live reload works now with the latest quarkus snapshot.
No exception is thrown.

[Sanne]

excellent, thanks @DavideD !