I have tried to redo all, and widgets can be placed on the pages in the sidebar in Admin mode – but as soon as I look at the front end, they are gone.
And when I switch back to Admin mode they appear as “Inactive sidebars”.
This is a SERIOUS bug, that needs to be adressed ASAP. The amount of work involved in getting the site running smoothly again is major!
Are there any ways to roll back from V 3.9 to 3.8? I’m very, very tempted…