Update-Button doesn't send mails when replying

Infos:

  • Used Zammad version: 5.2.x
  • Used Zammad installation type: Package
  • Operating system: Ubuntu 20.4
  • Browser + version: Chrome 103.0.5060.53 (and every other browser)

Expected behavior:

  • Clicking the “Update” button sends the reply to the ticket owner

Actual behavior:

  • The button remains “pale” and no mail gets sent

Steps to reproduce the behavior:

I just installed Zammad and everything seems to work fine. I added a Google channel, incoming mails are working just fine. I also added the same Google account as an SMTP account to send mails - notifications are working fine as well. But whenever I try to reply to a ticket, the “Update” button gets stuck and now mail gets send. Here is a short video of me reproducing the error: Loom | Free Screen & Video Recording Software

The initial mail I created got sent, so the SMTP connection seems to work fine. It’s only the reply that fails. There are no hints in the log files and I’m a bit stuck.

I tried some more things like

  • removing the Google channels entirely and creating a new app
  • removing the SMTP account and trying to send with sendmail
  • updating to 5.2.1

but still without any success - I can still send an inital mail, notifications are working fine, only the “reply to” function is not working.

Any idea is much appreciated!