[Users] Problem with attachments

[Johan Vromans]

Claws 4.1.1 on Fedora 37.

When I compose a message and add an attachment, sometimes an incorrect MIME
heading is produced.

For example, I compose a simple text mail with some lines of text. Attach a
binary file (an OpenType font), and send it.

The result is that I see the attachment base64 encoded in the text window
(see image) and there is no paperclip in the summary.

It may be specific for this type of attachment, since images and PDFs work
as expected.

Any ideas?

-- Johan
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