Enonic has just released Enonic XP 6.5.3, due to a bug that caused the admin console to freeze when editing pages using mixins in layouts. We also fixed a scrollbar problem.
The bugs are listed in the release list on Github: https://github.com/enonic/xp/releases/tag/v6.5.3
The release can be downloaded from our repository: http://repo.enonic.com/public/com/enonic/xp/distro/6.5.3/ - and the latest release is always available on our web-pages: https://enonic.com/downloads
Please also note that a new bug have been discovered using JavaScript on the latest version of Java, Java 8u92. A method signature have been changed in Nashorn, causing a MethodNotFound exception for some operations in Enonic XP. Until a fix for this problem have been found, No Enonic XP installation should upgrade Java past 8u91. This problem affects all versions of Enonic XP.