This bug was originally marked as duplicate of bug 210651, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE 7.4 Beta (Build 201307092200)
VM: Java HotSpot(TM) Client VM, 23.21-b01, Java(TM) SE Runtime Environment, 1.7.0_21-b11
mromashova: Just compiled netbeans module
Created attachment 140761 [details]
Created attachment 156312 [details]
Navigated in Java-Source-File.
Created attachment 161568 [details]
working with clank_ast branch
Created attachment 162183 [details]
reopened IDE with clean cachedir and some broken files in clank.ast
Created attachment 162429 [details]
browsing sources of java library?