JdtTextTestSuite PluginsNotLoadedTest.pluginsNotLoaded fails intermittently

[BoykoAlex]

The test PluginsNotLoadedTest.pluginsNotLoaded fails intermittently with the stack trace:

java.lang.AssertionError: 
Wrong bundles loaded:
- org.eclipse.jdt.junit
 expected:<0> but was:<24>
	at org.junit.Assert.fail(Assert.java:89)
	at org.junit.Assert.failNotEquals(Assert.java:835)
	at org.junit.Assert.assertEquals(Assert.java:647)
	at org.eclipse.jdt.text.tests.PluginsNotLoadedTest.pluginsNotLoaded(PluginsNotLoadedTest.java:278)

Something must have changed in the platform to cause this test to fail.

PRs might be blamed for this issue while they have nothing to do with it.

See:
#1747
#1741
#1707 (looks like MD file change)

All have the same test failure

Last of all I've created a dumb PR changing the date in the license header - the same test has failed: #1753