SegmentedModeTest.testShowNothing fails since I20260112-1800

[iloveeclipse]

See https://download.eclipse.org/eclipse/downloads/drops4/I20260112-1800/testresults/html/org.eclipse.ui.editors.tests_ep439I-unit-linux-x86_64-java21_linux.gtk.x86_64_21.html

org.eclipse.ui.editors.tests.SegmentedModeTest	testShowNothing	Failure	expected:<[]> but was:<[this ]>

org.junit.ComparisonFailure: expected:<[]> but was:<[this
]>
at org.junit.Assert.assertEquals(Assert.java:117)
at org.junit.Assert.assertEquals(Assert.java:146)
at org.eclipse.ui.editors.tests.SegmentedModeTest.testShowNothing(SegmentedModeTest.java:128)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)

This is a regression from 59dbd43 / #3585.

Note, the test fails locally only if launch config contains most of SDK plugins (via "Restore defaults" button). Executed with "Select required" plugins it passes (which explains why it works on jenkins and doesn't work in "official" SDK builds with all SDK bundles).

[iloveeclipse]

@danthe1st : please check.

[vogella]

#3670

[vogella]

Thanks @danthe1st for fixing and @iloveeclipse for reporting, according the last nights run this issue is fixed