"Go to Symbol" java.lang.AssertionError

(also fails with 11.2 u1)

-using java1.8
-Start with empty userdir/cachedir, don't import settings
-Use attached test-project, note each pom has a <reposiories> (from NETBEANS-3257)
-Open the two unzipped projects
-download nb-javac
-Navigate > GoToSymbol; enter "d"
=== exception:
SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor org.netbeans.modules.java.source.ui.AsyncJavaSymbolDescriptor$$Lambda$349/3470905
java.lang.AssertionError
-A couple of symbols are listed
-press OK for doSortAssertionRenamed
=== exception:
java.lang.AssertionError

Nothing happens in the UI as far as opening the file with the symbol
messages.log attached

• Try without nb-javac, the projects don't open "(broken)"