Hey Andy: plugins_loaded is a bit early. Although plugins have loaded by this points other key parts of WordPress have not. Can you push this forward to the init action?
Just one more thing. It seems I need to also ‘Save Changes’ for the formatting to work correctly, otherwise every item shows up on same line no as distinct dropdown items.
Just one more thing. It seems I need to also ‘Save Changes’ for the formatting to work correctly, otherwise every item shows up on same line no as distinct dropdown items.