Hi,
I developed an GWS Marketplace Add-On for Google Docs. Unfortunately the Add-on does not appear in the Sidebar. I can only access under the tab "Extensions. But it should also be visible on the right side as all other Add-ons.

The UI is build with HTML and the GCP Project is set up correctly (Marketplace SDK enabled, Publish as Docs Addon also active).
From my point of view, please correct me if Im wrong, any specific code line must be missing.
Many thanks in advance for the support!
Hannes

