I have improrted a module with some libraries from Eclipse. I have attached sources to the libraries. I have copied a class from one of the libraries to the imported project. I have modified one method of the class. I have created a new module which depends on the imported project. I have added the libraries from the imported module to the dependency list of the testing module below the imported module. I have created testing class which calls some methods in the imported module. I have launched the testing code. The run has failed and one of stacktrace items pointed to the modified method. I clicked the link in the stacktrace item but the original class from library was opened instead of the modified class. I can access the relevant code using workaround as follows: Ctrl-N -> Name of the class from the stacktrace Ctrl-G -> line from the stacktrace Then the correct source code is opened. Note: Such configuration is typical for my style of work. I have project with core libraries and with libraries comming from nightly builds. I check out from our repository only files which will be modified. My testing code is in a separate module dependent on the main module. Then I am facing similar discrepancies quite often. It looks like discrepancy between order of modules/libraries in classpath and order of modules/libraries used for browsing code which occurs in some specific circumstances.