Description

When replying to an email and hitting send, Bulwark saves the reply to drafts and just doesn't send the email. This doesn't happen every time, just about every 1 in 10-20 replies and as far as I can tell only with replies.

When trying to send the mail from drafts after the error, it doesn't send most of the time. I have to reload (browser reload button because Bulwark catches (Ctrl+)F5 for reloading the mail list), delete the draft and re-write or paste the reply.

Steps to Reproduce

1. open email
2. hit "reply"
3. write mail
4. hit "send"

Expected Behavior

The mail gets sent

Actual Behavior

The mail gets saved to drafts and isn't sent

Bulwark Version

1.6.7

Stalwart Mail Server Version

0.16.5

Browser

Firefox

Operating System

Windows

Screenshots / Screen Recording

No response

Relevant Logs or Error Output

Maybe relevant? I'm not sure.

Error: Failed to find Server Action "x". This request might be from an older or newer deployment.
Read more: https://nextjs.org/docs/messages/failed-to-find-server-action
    at ignore-listed frames

Additional Context

Bulwark runs behind a Traefik reverse proxy, but on the same machine as Stalwart. Stalwart doesn't log any errors.