Fill not Unset if child path is set via attribute instead of css

The child path inside the group has a fill set, but it was set by element attribute rather than css style. So inkscape wasn't able to clear it in the attached file. Inkscape should be able to clear this too, otherwise the Unset fill gets overridden.

Steps to reproduce:

1. Open Inkscape
2. Open unset_problem.svg
3. the object on the left is the original, and the object on the right is a clone of it. Click in the right object.
4. try and unset the fill, so that the clone object on the right becomes red (it's set to fill red).

What happened?

Clone remains white, even though the fill on the original is unset.

What should have happened?

Clone should turn red (and the original should turn black, when fill is Unset)

Inkscape Version and Operating System:

• Inkscape Version: 1.3
• Operating System: Ubuntu
• Operating System 22.04