Issue with HTML Embedded Module in Xibo CMS V4.0.6 on Ubuntu Docker

Dear XiboCommunity Team,

My name is Sabin, and I am currently using Xibo CMS V4.0.6 on Ubuntu Docker. I encountered an issue while trying to create a layout with the HTML Embedded Module. Specifically, when attempting to copy and paste certain free background animation code from, I noticed that some of the codes are not saving properly. Additionally, the module freezes and becomes uneditable after pasting certain HTML, CSS, and JS code.

Here are the links to the CodePen examples I was attempting to use:

  1. Link 1
  2. Link 2
  3. Link 3
  4. Link 4

I would greatly appreciate any assistance or guidance on resolving this issue.

Thank you for your attention to this matter.