Existing attachment disappears if adding to existing draft from mobile

Checklist

• I have used the search function to see if someone else has already submitted the same bug report.
• I will describe the problem with as much detail as possible.

App

Thunderbird for Android

App version

14.0

Where did you get the app from?

Google Play

Android version

android 13

Device model

No response

Steps to reproduce

1. log into email account on desktop and draft email with an attachment (any file), then save it
2. open app on mobile and select the draft and open the email / or fill an email-address and send -> the attached file is NOT present

Expected behavior

regardless if common picture format, please make the file appear at the bottom as if i were to add the picture on the mobile app; after clicking paper clip on mobile adding pictures works and the picture/attach. appears at the bottom
in contrast if the email with attachment is pulled from server it wont show; instead of webinterface of email provider i now tried thunderbird desktop; also no success

i really need draft files to show up please

Actual behavior

see expected behavior

Logs

No response

No source files or tests are named. Start by reproducing the issue with a desktop-created draft containing an attachment, then trace how Thunderbird for Android loads drafts and represents their attachments. Done means the existing attachment appears when the draft is opened on mobile and remains available when sending.