web ui is not showing answer/reply button

• Used Zammad version: 6.4.2
• Used Zammad installation type: package
• Operating system: Debian 12
• Browser + version: all

Expected behavior:

• using the frontend as agent there should be a link under the ticket to answer/reply

Actual behavior:

• see screenshot
  
  Image may be NSFW.
  Clik here to view.

Steps to reproduce the behavior:

• fresh installation
• imap integration
• smtp for notifications is working

Thanks
Matthias