I've created a new backend page, under the "User Management"
folder. However, as soon as the page is loaded, even before
"Uncaught TypeError: jQuery is not a function"
In the following code:
if (jQuery(".sfSiteSelectorMenuWrp").length > 0)
which is sitefinity native code.
The reproduction steps are:
Administration->BackEnd Pages->User Management - Create Child Page
Has anyone else had this problem before?