I've made a very simple testing page ( a "single article" page) https://cchc-herald.org/debug and you can see that even on this page Mootools is loaded. I can't remember doing anything that could cause Mootools to be loaded. Could anyone please help me find out?
I need to find out why it is loaded, please don't simply tell me to get an extension to disable it.
By the way, I keep Joomla updated on a weekly basis. So my site always has the latest Joomla version.