I have a bunch of modules under parent pom. In the parent pom, there is a dependency management section that defines the 2.12.0 version of the Jackson library. However, in one of the modules (Module One), I need to downgrade the version to 2.10.5 due to compatibility issues. For this module, it works well. There is a second module(Module Two) that has a dependency on Module One. And for this dependency maven resolves the version of Jackson to 2.12.0. But Module Two actually doesn't declare a dependency on Jackson at all, just dependency on Module One. In the end, I'm getting compatibility issues here.
It can be resolved by explicitly specifying a dependency on Jackson 2.10.5 in Module Two, but it still looks like a bug.
I've created a very small project to demonstrate the problem. You can check out it here https://github.com/DrBAXA/maven-test or just download the attached archive.
In maven-test-lib and maven-test-app there are just two test files. One of them fails as expecting 2.10.5 version