[Bug] Wino Mail disconnects when viewing some "complex" emails

[florianschmittdottech]

Describe the bug
When viewing complex emails (It seems to be happening only with emails containing images and complex formatting such as newsletters), Wino mail displays "Wino Server Exception - Server response did not contain message data", and then disconnects.
The message is displayed correctly with all images and proper formatting.
The message is not marked as read in the mail list
Trying to delete the message returns "Synchronization Failed - Wino Server responded with 'Failure' status to message delivery"

Expected behavior
Message opens correctly without an error message, is marked as read, and clicking "Delete" deletes the message

Screenshots
When opening the message:

When trying to delete the message:

Additional context
What I tried to reproduce on another device:
Installed Wino Mail 1.9.30.0 from Windows Store on Windows 11 24H2 (26100.2161) / 64 bit ARM
Connected to my Migadu email account using IMAP
Subscribed to a newsletter (ex: elgiganten.dk, silvan.dk, etc)
Received a message
Tried to open/delete the message.

[Viruslav]

I have exactly the same issue with the Arm64 version (with a gmail account but it doesn't matter, I think). I tried the x64 version on another PC and there weren't problems with the exact same mails. So I'm assuming it's an Arm64 issue only.