On Wed, Nov 25, 2015 at 2:24 PM, Sergey Bylokhov <Sergey.Bylokhov at oracle.com> wrote: > Note that in jdk9 this option is disabled by default, to enable it you > should pass -Dsun.awt.nativedebug=true to the java. Sergey, thank you for the hint! I didn't know that. Best regards, Andrej Golovnin