Admin UI Broken

The “Customize This Form” of the registration form editor does not work. It returns the following errors in the console:

draggable.min.js?ver=1.11.4:11 Uncaught TypeError: Cannot read property ‘mouse’ of undefined
at draggable.min.js?ver=1.11.4:11
at draggable.min.js?ver=1.11.4:11
at draggable.min.js?ver=1.11.4:11
slider.min.js?ver=1.11.4:11 Uncaught TypeError: Cannot read property ‘mouse’ of undefined
at slider.min.js?ver=1.11.4:11
at slider.min.js?ver=1.11.4:11
at slider.min.js?ver=1.11.4:11
iris.min.js?ver=1.0.7:5 Uncaught TypeError: a.widget is not a function
at iris.min.js?ver=1.0.7:5
at iris.min.js?ver=1.0.7:5
color-picker.min.js?ver=5.5.1:2 Uncaught TypeError: i.widget is not a function
at color-picker.min.js?ver=5.5.1:2
at color-picker.min.js?ver=5.5.1:2
tooltip.min.js?ver=1.11.4:11 Uncaught TypeError: d.widget is not a function
at tooltip.min.js?ver=1.11.4:11
at tooltip.min.js?ver=1.11.4:11
at tooltip.min.js?ver=1.11.4:11
lightbox-plus-jquery.js:3850 Uncaught TypeError: jQuery(…).sortable is not a function
at HTMLDocument.<anonymous> (um-admin-forms.js?ver=2.1.9:145)
at l (lightbox-plus-jquery.js:3557)
at m (lightbox-plus-jquery.js:3625)
lightbox-plus-jquery.js:3850 Uncaught TypeError: jQuery(…).tooltip is not a function
at um_init_tooltips (um-admin-scripts.js?ver=2.1.9:82)
at HTMLDocument.<anonymous> (um-admin-scripts.js?ver=2.1.9:164)
at l (lightbox-plus-jquery.js:3557)
at m (lightbox-plus-jquery.js:3625)
lightbox-plus-jquery.js:3850 Uncaught TypeError: jQuery(…).sortable is not a function
at UM_Drag_and_Drop (um-admin-dragdrop.js?ver=2.1.9:2)
at HTMLDocument.<anonymous> (um-admin-dragdrop.js?ver=2.1.9:284)
at l (lightbox-plus-jquery.js:3557)
at m (lightbox-plus-jquery.js:3625)