The toolbar works just fine. I've tested it. The issue is something else. If you use my custom CSS and uncommented this code:

div.editor-toolbar div button {
    display: none !important;
}

For some reason this code no longer works and removes the entire toolbar, or better said all buttons in the toolbar. It's only supposed to remove
image
I am not sure what changes @laurent and @personalizedrefriger have done recently, but a lot of the CSS broke. e.g. the note count look like this with my CSS all of a sudden:

image

I guess I will have to fix my css, but I currently don't have time. Then I do not even know whether it's possible. If the dev team removed the class names, it will be almost impossible.