This is related with CODETOOLS-7901671.
By Jonathon "On startup, jtreg examines the JDK under test to find what modules are present. If it determines that a module is not present, the test will automatically be skipped."

So if specify EE modules dependency with @modules in a test, jtreg will skip the test by default.

But if specify the modules in TEST.properties, it look that the test will not be skipped.