Hooray, yet another modules-related issue 😉 

After updating logback-core from 1.4.1 to 1.4.2+, I started getting this error from maven-compiler-plugin:

module not found: jakarta.mail

This surprised me, as I didn't declare any{{requires}} in my module-info. However, when opening the module-info of logback-core, my IDE highlighted the problem:

Note that missing modules don't cause any problems with requires static, as expected. However as soon as we add transitive, they are required by downstream modules.

It is my understanding that transitive should only be used, if the module exposes public API which uses classes from the corresponding module. Is this really the case for jakarta.mail? If so, I guess they should be added as a (non-optional) dependency.