Bug#992683: evolution: Only English charaters show when reading mail (mail body), Chinese characters are not shown

[David Du]

Package: evolution
Version: 3.38.3-1
Severity: important
X-Debbugs-Cc: duhaiboo at foxmail.com

Dear Maintainer,

   * What led up to the situation?
   When I update debian from buster to  bullseye yesterday, evolution cannot show mails correctly now. All Chinese characters of mail body are not show or shown in boxes.
   
   I try to change the character encoding, but it doesn't work. I deleted all files in ~/.config/evolution, ~/.local/share/evolution, and ~/.cache/evolution, and reinstalled the evolution package, there's no use.
   
   Now, I can't read the mail, only the subject list is correct, chinese characters are all missing or shown as a box. But tasks, calendars, and memos are all shown correct.


-- System Information:
Debian Release: 11.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-8-amd64 (SMP w/4 CPU threads)
Locale: LANG=zh_CN.UTF-8, LC_CTYPE=zh_CN.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages evolution depends on:
ii  dbus                   1.12.20-2
ii  evolution-common       3.38.3-1
ii  evolution-data-server  3.38.3-1
ii  libc6                  2.31-13
ii  libcamel-1.2-62        3.38.3-1
ii  libclutter-gtk-1.0-0   1.8.4-4+b1
ii  libecal-2.0-1          3.38.3-1
ii  libedataserver-1.2-25  3.38.3-1
ii  libevolution           3.38.3-1
ii  libglib2.0-0           2.66.8-1
ii  libgtk-3-0             3.24.24-4
ii  libical3               3.0.9-2
ii  libnotify4             0.7.9-3
ii  libsoup2.4-1           2.72.0-4
ii  libwebkit2gtk-4.0-37   2.32.3-1
ii  libxml2                2.9.10+dfsg-6.7
ii  psmisc                 23.4-2

Versions of packages evolution recommends:
ii  evolution-plugin-bogofilter  3.38.3-1
ii  evolution-plugin-pstimport   3.38.3-1
ii  evolution-plugins            3.38.3-1
ii  yelp                         3.38.3-1

Versions of packages evolution suggests:
ii  evolution-ews                   3.38.3-1
pn  evolution-plugins-experimental  <none>
ii  gnupg                           2.2.27-2
ii  network-manager                 1.30.0-2

-- no debconf information