Allow the scripts and configurations in tinymce editor

Like others, I am having trouble overriding TinyMCE. I’m using an override of the blank theme. In site/input/themes/blank-override I have the following config.json:

{
    "name": "Blank",
    "version": "1.0.0.0",
    "...": "edited for brevity",
    "extensions": {
        "postEditorConfigOverride": true,
        "postEditorCustomScript": true
    }
}

and the following tinymce.override.json:

{
    "toolbar1": "styleselect formatselect searchreplace removeformat undo redo",
    "toolbar2": "image bullist numlist bold italic link unlink media table"
}

When I load Publii, the standard toolbars show up: