Issue with Copying Container Element with Children

[yeddeka]

Hello,

I am experiencing the following problem when copying a container element with its children. Please see the attached screenshot for reference.

This issue was previously mentioned in #74.

When I uninstall the content-defender extension, everything functions as usual.

I am not using Flux, and here are the versions I am currently utilizing:

ichhabrecht/content-defender: 3.5.3
b13/container: 3.1.11

Thank you for your assistance.

Best regards,
Kamel Ben Yedder