cloning from a filtered layer to another clones the original unfiltered layer

Environment/Versions

• GIMP version: 2.99.17 commit f9a75fbe
• Package: recent pull
• Operating System: Linux

commit f9a75fbe

Description of the bug

    It clones the unfiltered original colors to the new layer.

Reproduction

Is the bug reproducible? Always

Reproduction steps:

1. Filter a layer (I used Levels).
2. Add a layer or use an existing different layer.
3. Select filtered layer and engage clone with a shift click.
4. Move to the new layer and use the clone tool.

…

Expected result: That the newly cloned areas are of the filtered layer.

Actual result: The newly cloned areas are of the unfiltered original layer.

Additional information

Also, the filtered image does not update in the layers dialog thumbnail. I was not going to report this as it is bordering on cosmetic, but I am surprised by how much I use the visual information from the layers dialog -- you know, so as to know which layer was say, auto-levelled and which one was thresholded, etc.