I think that problem was not visible unless one goes pixel-peeping.
One can tweak the detail params, and/or use more careful masking.
Tweaking the params (reduces noise suppression):
More careful masking:
And an alternative version (see sidecar):
(Ignore the blurred area on right-hand-side: darktable now uses a low-res preview if the image gets moved, and I did not wait for the full rendering to finish.)
0P9A0410_01.CR2.xmp (17.9 KB)
