I just updated my Safari from Safari 9 to safari 10 beta version. My client is a java applet runs from a page. In Safari 9 and before version, it runs OK. But in Safari 10 beta, it fails. I found that safari 10 blocks access to local files from Java applet. So I think it is because the java plugin runs under safe mode. But in Safari ->preferences->security->Plug-in Settings. there is no unsafe mode option to check. there is only three option :Ask,Off,On. So my client can not access local file in safe mode now.
My mac system is OS X El Capitan version 10.11.6 and Safari version is version 10.0
Is that possible to set Unsafe mode in Safari 10 beta version?