On jre9 b26, it takes up about 30 seconds to disable Java content and UI of JCP hangs up. While it only costs about 2 seconds to disable java content on 8u20.
Steps to reproduce:
1) Launch JCP
2) Disable Java content by unselecting "Security-> Enable java content in the browser" and then clicking "Apply"
3) If it costs around 30 seconds until the "Success - Java Plug-in" showing up, bug is reproducible.
Steps to reproduce:
1) Launch JCP
2) Disable Java content by unselecting "Security-> Enable java content in the browser" and then clicking "Apply"
3) If it costs around 30 seconds until the "Success - Java Plug-in" showing up, bug is reproducible.