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-run IDE with new userdir -invoke Profiler -> Advanced -> Run profiler Calibration -press Details and OK or directly OK when the calibration ends => see attached screenshot
Created attachment 52248 [details] screenshot
Could you please also attach the IDE logfile?
Created attachment 52249 [details] IDE log
Are you able to reproduce it reliably? I've tried it on similar configuration and everything works fine.
Actually, in 2 from 3 cases :( Could it be related to background classpath indexing or using external JDK?
It looks like a duplicate of issue 109418
yup, it is. Thanks for the pointer. *** This issue has been marked as a duplicate of 109418 ***
Verified duplicate
Integrated into 'main-golden', will be available in build *200904291401* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-golden/rev/1fc9cda099c0 User: Jaroslav Bachorik <yardus@netbeans.org> Log: #120792 - added proper synchronization for panel instantiation