Pop Shop not working well with gtk themes other than default

[keftie22]

How did you upgrade to 22.04? (Fresh install / Upgrade)

Fresh install

Related Application and/or Package Version (run apt policy $PACKAGE NAME):

pop-gtk-theme:
  Installed: 5.5.1~1650296971~22.04~f860355
  Candidate: 5.5.1~1650296971~22.04~f860355
  Version table:
 *** 5.5.1~1650296971~22.04~f860355 1001
       1001 http://apt.pop-os.org/release jammy/main amd64 Packages
       1001 http://apt.pop-os.org/release jammy/main i386 Packages
        100 /var/lib/dpkg/status
     5.2.0~1586289568~20.04~f35b83b~ubuntu1 500
        500 http://us.archive.ubuntu.com/ubuntu jammy/universe amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu jammy/universe i386 Packages
pop-shop:
  Installed: 3.4.2pop0~1650311375~22.04~b2e7dbb
  Candidate: 3.4.2pop0~1650311375~22.04~b2e7dbb
  Version table:
 *** 3.4.2pop0~1650311375~22.04~b2e7dbb 1001
       1001 http://apt.pop-os.org/release jammy/main amd64 Packages
        100 /var/lib/dpkg/status

Issue/Bug Description:

The Pop Shop now has issues with being readable or missing visual elements on themes other than the default one that comes with Pop.

The default:

Adwaita is unreadable:

Yaru-dark is missing the button and background:

It started looking this way after a recent update to the pop shop a couple days ago.

Steps to reproduce (if you know):

Change gtk theme and then open pop shop

Expected behavior:

That the app page at least be readable and have a legible button.

Other Notes:

[xploz1on]

Tested with all these themes:

All are readable within Pop!_Shop. No missing elements. Adwaita el fully readable. Are you fully updated?

[keftie22]

I am indeed fully updated as shown with my apt policy output above. I can show you how the themes change the pop shop here:

pop_shop_theme_switching.mp4

Yaru light and Adwaita light are unreadable and the dark versions are missing the button and background elements while it looks normal with the default pop theme.

[lfom]

Pop!Shop is based on the ElementaryOS app center, it requires that the theme also includes special code for it. Please see:

pop-os/shop#124
jnsh/arc-theme#83

Some themes, like Nordic, support it tho.