Hello, First let me wish the Maven community a happy new year. I recently faced a problem with the shade plugin generating randomly different dependency-reduced-pom.xml. The difference lies in exclusions defined in miscellaneous dependencies randomly being missing in the pom. This part of the build builds multiple (4) project in // (-T 1C) all using the shade plugin to generate a dependency-reduced-pom.xml. All my tests are done with the latest maven-shade-plugin 3.5.1 I think there is a concurrency issue somewhere and I think it is in Maven model being manipulated by the shade plugin.
With Maven 3.9.4 I was able to reproduce the problem only once. With 3.9.5 & 3.9.6 it started to be a lot more reproducible. Could the Shade plugin use Maven model in a non thread safe way ? Any idea welcome ! (I'm sorry and haven't taken the time to dev a SCCE(http://sscce.org/) yet but I may try if no one has an idea of what is happening) Regards Francois
