Custom CSS have vanished

I upgraded to TC 4.0.4.
My Custom CSS have vanished in the back end.
They have been loaded (the front end is rendered correctly), but they don't appear in the Custom CSS tab of Template Creator CK. So I can't modify them.

Hi
there is a problem with the editor in this area, please try again and be careful to click the editor to activate it, then your code must appear
let me know
CEd

It works.
Nice trick!

great