[Bug]: Hop server Web UI java stack trace in pipeline widget

[jonassundman]

Apache Hop version?

2.5

Java version?

OpenJDK Runtime Environment (build 11.0.20.1+1-post-Ubuntu-0ubuntu122.04)

Operating system

Linux

What happened?

In the Hop Server Web UI the contents of the pipeline table is missing and a Java error is shown.

The error is "java.lang.IllegalArgumentException: Comparison method violates its general contract!"

Restarting the server resolves the issue.

Issue Priority

Priority: 2

Issue Component

Component: Hop Server

[mattcasters]

It would be cool to have a reproduction path for this one, to know what happened.