DO NOT TEST ON A LIVE/PRODUCTION SITE but rather on a copy of a production site with the owners permission.
Directions on how to test and what to test can be found at https://docs.joomla.org/Pre-Release_Testing. See the list of bugs addressed by this release.
Download packages: https://github.com/joomla/joomla-cms/releases
Specific tests Production would like:
- TinyMCE had a lot of fixes for default language, iframe display, showing buttons...
- Logos (even on login page) should display correctly
- Breadcrumbs for menu items with tagged items are fixed
- Modals should open and close correctly
- Permissions for mod_submenu are fixed
- Start and end feature for articles and categories received fixes
- Fix for the child templates html directory #38986
Thank you for helping Production test this next release of Joomla
Discussion Forum: viewtopic.php?f=9&t=999301