Inspector CSS Doesn't Apply Background Repeat

Steps to reproduce

1. Download the example, and edit the string literal to point towards a folder that has 1000 images, like this PNG dataset from kaggle.
2. Compile and run the attached app with flatpak master runtime
3. Open inspector and note the render node
4. Open CSS tab in inspector and paste the following snippet which already exists in style.css:

.thumbnail {
  background: url('/tech/kabus/gtk4playground/resources/Checkerboard.png') repeat;
}

4. Enable inspector CSS, and note the render node

Current behavior

Inspector CSS has no repeat node, even though it changed nothing about CSS rules.

Expected outcome

Using inspector CSS should not behave differently from normal CSS

Version information

4.17.1-bccd0aa0

Ubuntu 24.10 Wayland Vulkan Nvidia 560.140.192

Additional information

gtk4-playground.zip

This what more or less happens in Nautilus when scrolling too fast with thumbnails.