Felix, thank you. I went over the stacktrace and found an interesting case:
8231084: Large performance regression in SwingMark TextArea in 14-b13 https://github.com/openjdk/jdk/commit/007a0fb2321f1691d341a3ceb9d321cd01d506c8 https://mail.openjdk.java.net/pipermail/swing-dev/2019-November/009850.html I'm not sure it is the same issue we are running into. Vladimir
