Hi,
which update is not in the installation and was integrated?
Make sure to check the used preset to confirm the claim (autosaved xml on that ISO).
Then on the loaded image (pre-install) on the Updates page, Existing updates list on the right to see if it's integrated, or try adding the same update to the image, it will warn if already integrated.
Just in case I now tested the integration of KB5011543, all good.
Attached is what I see revisiting that page after integration of KB5011543 + the default selection for the rest, and image installation.
Did you integrate both KB5011487 and KB5011543, or just KB5011487?
Since the screenshot shows KB5011487 as installed, I suggest not to do that next time, start fresh and integrate only the preview.
Btw if integrating Preview, no need for Stable, because Previews, or any Cumulative Update KB, includes all previous of the same type.
Bit weird that yours are all gray on the left, if that's the main point of your question.
I cannot replicate that without installing them all.
Know that Windows Update sometimes redownloads updates after installation, not specific to NTLite or that update wasn't fully installed.
One of the main triggers are .NET updates or changes to the feature states.