GIMP 2.10.6 out-of-range RGB values from .CR2 file

Okay, I know this thread is getting entirely too long, but I’ve been picking through this year’s images and re-processing selected ones with the new camera profile I made back in post #102, then comparing them with what I did with the old profile that required separate white balance. The difference is marked; I’m starting with richer colors. Here’s an example, first the old rendering:

Then, the new rendering with the uwb profile:

Now, the first profile might just be crappy; in fact I think I made it with the blown-white exposure, and the new one was made with the next lower, which was a good ETTR. But, well, the whole chromatic treatment of white balance just makes intuitive sense, and so far I don’t see a downside. Now, that’s with my “manual transmission” software; this may be harder or impossible in tools that do more under the hood before presenting the image for work.

Still no downside…
Edit: well, the red flower really showed its colors; might need to work on that.