TinyMCE - failed to load cpcollectionlink plugin

Hello community

Do you have any idea how to solve the following issue?

Error message: Failed to load plugin: cpcollectionlink from url <domain>/assets/lib/tinymce/plugins/cpcollectionlink/plugin.min.js

Strange is that I am not able to reproduce the same issue on my local environment with the same code base, and database, …

Even there is no JS load request for a such file on my local (browser console → network tab).

Cockpit version: 0.12.1

Thank you in advance for your help.