[Firefox] Pages with unicode (including a few password fields) broken

eg website: GitHub - krahets/hello-algo: 《Hello 算法》:动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新,English version ongoing


CL version: 42030
first seen in: 42020
already ran sudo swupd repair -Y
so I’m not sure if this is related to an update or CL in general

Might be related
Trying to run protontricks (flathub) crashes with the following error

i@clr~ $ flatpak run com.github.Matoking.protontricks --gui
Traceback (most recent call last):
  File "/app/bin/protontricks", line 8, in <module>
    sys.exit(cli())
             ^^^^^
  File "/app/lib/python3.11/site-packages/protontricks/cli/main.py", line 32, in cli
    main(args)
  File "/app/lib/python3.11/site-packages/protontricks/cli/util.py", line 159, in wrapper
    return cli_func(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/lib/python3.11/site-packages/protontricks/cli/main.py", line 277, in main
    proton_app = find_proton_app(
                 ^^^^^^^^^^^^^^^^
  File "/app/lib/python3.11/site-packages/protontricks/steam.py", line 848, in find_proton_app
    tool_app = find_steam_compat_tool_app(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/lib/python3.11/site-packages/protontricks/steam.py", line 604, in find_steam_compat_tool_app
    content = config_vdf_path.read_text()
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/pathlib.py", line 1059, in read_text
    return f.read()
           ^^^^^^^^
  File "<frozen codecs>", line 322, in decode
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xdc in position 18448: invalid continuation byte

Trying to run lutris also has a error whilst reading files

i@clr~ $ lutris -d
2024-07-15 19:06:18,827: The Battle.net source is unavailable because Google protobuf could not be loaded: No module named 'google'
INFO     2024-07-15 19:06:18,938 [application.do_command_line:479]:Starting Lutris 0.5.17
INFO     2024-07-15 19:06:18,964 [startup.run_all_checks:120]:AMD Radeon R9 Fury Series (1002:7300 1002:0b36 amdgpu) Driver 24.2.0
ERROR    2024-07-15 19:06:19,036 [vdfutils.vdf_parse:14]:Error while reading Steam VDF file <_io.TextIOWrapper name='/home/i/.local/share/Steam/config/config.vdf' mode='r' encoding='utf-8'>. Returning {}
ERROR    2024-07-15 19:06:19,038 [vdfutils.vdf_parse:14]:Error while reading Steam VDF file <_io.TextIOWrapper name='/home/i/.local/share/Steam/config/config.vdf' mode='r' encoding='utf-8'>. Returning {}
DEBUG    2024-07-15 19:06:19,104 [path_cache._update_missing_games:114]:Checking for missing games