Bug 449250

Summary: GTK_USE_PORTAL=1 doesn't show the KDE-native file picker in Firefox.
Product: [Plasma] xdg-desktop-portal-kde Reporter: Lyubomir <liubomirwm>
Component: generalAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED DOWNSTREAM    
Severity: normal CC: aleixpol, jgrulich, nate
Priority: NOR    
Version First Reported In: 5.23.5   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Lyubomir 2022-01-27 13:37:02 UTC 
SUMMARY
GTK_USE_PORTAL=1 doesn't show the KDE-native file picker in Firefox. The GTK chooser shows, just with more GNOME-ish buttons, icons, colors.

Please see comments below this one: https://bugzilla.mozilla.org/show_bug.cgi?id=528701#c5

Not sure if it's a KDE upstream or Arch downstream issue.. Filing here as i expect KDE people to have more know-how on the topic and more easily spot an error in Arch's distribution.

Operating System: Arch Linux
KDE Plasma Version: 5.23.5
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Kernel Version: 5.16.2-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7,6 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
Comment 1 Nate Graham 2022-01-27 15:08:56 UTC 
You also need to set widget.use-xdg-desktop-portal to true in about:config. This is a recent Firefox requirement; both need to be set.