1505676 - Broken UTF-8 in subject preview

Status: RESOLVED DUPLICATE of bug 404856

(Thunderbird :: Message Reader UI, defect)

Description

[Stephan]

Attachment: Screenshot from 2018-11-08 07-39-46.png

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0

Steps to reproduce:

Receive a mail with UTF-8 Emojis in subject.

Thunderbird 60.2.1 (Linux, AMD64) as delivered with Ubuntu 18.10.


Actual results:

As the subject was cropped for message preview in the folder listing, the last character is not displayed correctly.
I assume that the subject string was cut on byte level, resulting in an UTF-8 character being cut into two pieces resulting in an invalid UTF-8 string.


Expected results:

Cuts should be implemented on the character level, respecting the underlying character encoding.

Comment 1

[Jorg K (CEST = GMT+2)]

Yes, I have noticed that at times. Never got around to filing a bug. That's an M-C problem since the platform code does the rendering.

Masatoshi-san, any idea to which component we should move the bug? XUL?