The waiter gif never ends.
Console:
Uncaught TypeError: Cannot read property 'apiCall' of undefined load.php?debug=false&lang=en&modules=ext.favorites.style|ext.flow|ext.flow.components%2Cdm%2Ceditor…:63
[FLOW] Failed to getInstanceByElement: no $container.length Arguments[1] load.php?debug=false&lang=en&modules=ext.favorites.style|ext.flow|ext.flow.components%2Cdm%2Ceditor…:63