Works well with Pamac
The app list is missing

Software that presents the issue:
Thanks for taking the time to report this issue @laichiaheng
Can you tell me if the app list is also missing with the Adwaita theme?
@madsrh No, it doesn't.
@madsrh It only happens to the AUR app list.
It looks more a system problem, yaru only styles the results
@clobrano But other GTK themes don't have this problem.
I understand, but Yaru on AUR is kind of experimental. I really can't understand how a theme (installed properly) can discard a list of items to display. I can only think of weird behavior when every element of this list is white on white, or transparent.
@laichiaheng could you please post a screenshot of your app using adwaita?
We officially only support Ubuntu but if it's easy to fix for other distros we can maybe do something. But I don't have time to set up an arch VM to debug this, I didnt even know this app exists
Edit: also - is that aur package up to date and correctly packaged? Might check to just install this theme from src instead https://github.com/ubuntu/yaru/blob/master/CONTRIBUTING.md#build-and-install-themes-from-source
@Feichtmeier

It still happens if I build it myself, there is no libgtk-3-dev in arch though.
@laichiaheng thanks!
Could you check with the gtk inspector which widget hierarchy had been used there? Or just post a screenshot of your gtk inspector?
You can enable it with
https://github.com/ubuntu/yaru/blob/master/CONTRIBUTING.md#quick-testing-in-the-gtk-inspector

@Feichtmeier What should I do after I open the widget factory and the inspector?
@Feichtmeier Or this?

Ah nice - you need to
1) open that pamac app
2) open the inspector with that hotkey
3) click that crosshair/bullseye symbol in the top left and then select the bugged element of the pamac app
4) select the combobox in the top left corner (under the corsshair/bullseye symbol) and select "CSS Nodes" (in chinese ;D )
5) make a good screenshot of the hierarchy like for example here:


Thanks we're almost there
could you please drag that right side of the gtk inspector to become smaller? so we can see the style classes of the selected widget in the left part of the window?

Could you please test this with the new master branch?
Best regards
@Feichtmeier It seems to work now.
I only test it with the yaru-gtk-theme-git in AUR.
Thank you for reporting back! Closing it then