Desktop: Linux client doesn't respect GNOME font selection

[eh8]

Expected behaviour

The Nextcloud client uses the same font seen throughout the rest of the GNOME desktop environment.

Actual behaviour

Nextcloud client instead uses the default GNOME font 'Cantarell.'

Steps to reproduce

1. Install Nextcloud desktop client
2. Double click tray icon

Client configuration

Client version: 2.6.4.git

Operating system: Arch Linux

Qt version used by client package (Linux only, see also Settings dialog): 5.15

Client package (From Nextcloud or distro) (Linux only): distro

Logs

Please use Gist (https://gist.github.com/) or a similar code paster for longer
logs.

1. Client logfile: Output of nextcloud --logwindow or nextcloud --logfile log.txt
   (On Windows using cmd.exe, you might need to first cd into the Nextcloud directory)
   (See also https://docs.nextcloud.com/desktop/2.3/troubleshooting.html#log-files)

[OCC::Application::setupLogging         "################## Nextcloud locale:[en_US] ui_lang:[en_US] version:[2.6.4git] os:[Arch Linux]"
[OCC::Application::slotParseMessage     Running for 116957 sec
[OCC::AccessManager::createRequest      6 "PROPFIND" "https://us.cloudamo.com/remote.php/dav/files/[email protected]/" has X-Request-ID "b49d4bb7-199c-4b36-80eb-0ffc155ec6d0"
[OCC::AbstractNetworkJob::start         OCC::PropfindJob created for "https://us.cloudamo.com" + "/" "OCC::ConnectionValidator"
[OCC::WebFlowCredentials::slotFinished  request finished

Additional information omitted for privacy

[jancborchardt]

@er-vin if you point out which file this likely needs to be changed in, it could possibly be a "good first issue", what do you think? :)

[eh8]

Let me know if I can provide any additional context or debugging info!

[er-vin]

@er-vin if you point out which file this likely needs to be changed in, it could possibly be a "good first issue", what do you think? :)

I wish I knew. ;-)

Actually this could even be something upstream, apart if we somehow overridden fonts it should be picked up for us by the Qt platform theme plugin...

[eh8]

When I first installed the client it used the correct font. After a few days it switched to Cantarell and has remained since. Disabling Cantarell via font-manager results in Vera Sans being used.

[vtronko]

What happens if you run it like this
QT_QPA_PLATFORMTHEME=qt5ct nextcloud
?

[eh8]

@vtronko solved!