Anyway to make it not do the double sidebar when clicking on a link that’s been added via panel_iframe?
Trying to add a link to quickly pull up States
panel_iframe:
states:
title: 'States'
url: '/developer-tools/state'
icon: 'hass:gesture-tap-button'
Well, that’s technically correct. It is showing you the webpage you asked for - including the sidebar.
Balloob posted a solution tho this:
For future users (or for my future self in case I forget 
) if you want to have more than one custom panel button that works as desired above you need to follow this structure, I got stuck thinking I had to give it a different name each time, but each one is still named “panel-redirect” as you’ll see blow, it’s the “url_path” that needs to be a unique name, here’s what I setup on mine to show both States & Server controls:
panel_custom:
- name: panel-redirect
# url_path needs to be unique for each panel_custom config
url_path: redirect-states
sidebar_title: States
sidebar_icon: hass:gesture-tap-button
module_url: /local/panel-redirect.js
config:
# Where you want to redirect to
target: /developer-tools/state
- name: panel-redirect
# url_path needs to be unique for each panel_custom config
url_path: redirect-server-controls
sidebar_title: Server Controls
sidebar_icon: hass:server
module_url: /local/panel-redirect.js
config:
# Where you want to redirect to
target: /config/server_control
I had to sudo mkdir /usr/share/hassio/homeassistant/www/before putting the js file in.
Is that assumption correct?
Not only will you need to make the www directory, you will also have to restart home assistant afterwards.