non-Latin characters can't be displayed correctly in window title

[hideyukn88]

Environment

Windows build number: 21340
Your Distribution version: Ubuntu
Your WSLg version: 0.2.13

Steps to reproduce

Install any application can display non-Latin characters to window title, such as Spotify.
(In this repro step, Spotify is used)
Install Spotify
Launch Spotify
Select song/artist which include non-Latin characters.
Window title should show song/artist name, but when those contains non-Latin characters, it shows as "box".

Expected behavior

non-Latin characters should be shown correctly.

[hideyukn88]

This is because system-distro doesn't contain any non-Latin fonts

[PhyX-Meow]

Same issue here.
But actually I have non-Latin fonts:

❯ fc-list | ag sourcehansans-normal
/usr/share/fonts/adobe-source-han-sans/SourceHanSans-Normal.ttc: 思源黑體 香港,Source Han Sans HC,Source Han Sans HC Normal,思源黑體 香港 Normal:style=Normal,Regular
/usr/share/fonts/adobe-source-han-sans/SourceHanSans-Normal.ttc: 思源黑体,Source Han Sans SC,Source Han Sans SC Normal,思源黑体 Normal:style=Normal,Regular
/usr/share/fonts/adobe-source-han-sans/SourceHanSans-Normal.ttc: Source Han Sans,源ノ角ゴシック,Source Han Sans Normal,源ノ角ゴシック Normal:style=Normal,Regular
/usr/share/fonts/adobe-source-han-sans/SourceHanSans-Normal.ttc: Source Han Sans K,본고딕,Source Han Sans K Normal,본고딕 Normal:style=Normal,Regular
/usr/share/fonts/adobe-source-han-sans/SourceHanSans-Normal.ttc: 思源黑體,Source Han Sans TC,Source Han Sans TC Normal,思源黑體 Normal:style=Normal,Regular

[hideyukn88]

@PhyX-Meow , the window title bar is rendered by system-distro, thus fonts needs to be installed inside system-distro but currently system-distro is not user configurable (such as installing other international fonts).

[lwldcr]

Same issue.
Is this problem going to be fixed in any later releases?

[hideyukn88]

@PhyX-Meow, @lwldcr, FYI: we made a change to system-distro to load from Windows by #266, thus as long as fonts for required language are installed at Windows side, it will be used. (note: system-distro does not load fonts from user-distro). Also, by microsoft/weston-mirror#22, pango will fallback for international text. Thanks for trying out WSLg!