Since JBIDE-10072 is twitter opened in external browser.
But now, I tried to open in internal browser and everything was just fine. May by some change on twitter.
Snjezana wrote in comment, that the error only happens whet xulrunner is installed.
Id: org.mozilla.xulrunner.gtk.linux.x86_64, Version: 1.9.2.19pre, Location: reference:file:plugins/org.mozilla.xulrunner.gtk.linux.x86_64_1.9.2.19pre/ is present in my installation of JBT
Could somebody else try it too?
Thanks.