Mail: Subject header not decoded with encrypted messages
I use Evolution 3.46.4-2 on Debian 12. If there are (German) special characters in the subject line they get initially displayed in the message overview in bold fine until I open them. Afterwards the bold print is replaced by normal weight (as intended) and the coding in this view fails. Suddenly the subject line in the message overview starts with "=?UTF-8?" and shows broken encodings.
This is the case only if there are special characters in the subject line not included in ASCII. And it only happens after the messages has been opened. However, the subject still gets correctly displayed with UTF-8 encoded special characters in the preview area.
My screenshot shows how the same subject line is displayed correctly in the message preview while the coding is broken in the message list! screenshot_2023-10-23t10.15