P: Library zoomed view shows wrong color

I downloaded your image and have to say, on this end, I don't see anything odd about the color when zooming. 

I do see a slight increase in apparent and visual saturation on the tree when zooming OUT (image gets smaller), and this is to be somewhat expected when subsampling pixels this way. 

At 100%, I do see a bigger difference between Library and Develop modules but again, due to the differences in the previews in both locations, not that unexpected. 

I wonder if there's an issue with that BenQ (their calibration software is kind of buggy). If you pick a 'canned' profile for the display, say even sRGB or Adobe RGB (1998) temporarily, do you see the same issues? 

Thanks for testing, I am uploading a video showcasing the dynamic behaviour of the color switch: https://www.dropbox.com/s/l5i0ryxm3fki1f6/LibZoomColorBug.mov?dl=0

this is on the laptop directly, not on external display. As said, it happens to all display profiles and with all treatment profiles, with/wo GPU support. So maybe dependent on graphics adapter / operating system?

Got it. 

I am not seeing a color shift in Library Loupe View from Fit to 100/200/400% 

lets take this image - it happens to any image: https://www.dropbox.com/s/n0kigpy99r9bscj/SK-20201205-210220-CanonEOS5DMarkIV.CR2?dl=0

If it is not a private image, you can share on Dropbox or similar.

sure - how can I upload a larger image? Can I email it to you?

@tomioka42. Can you provide me with the file used in your screenshot?

Thanks Andrew. Hopefully there will be a fixes for the visible difference between Develop to Library when zoomed in and the visible difference between Library Loupe View - Fit and Library Loupe View - zoomed.

It's a bug, I have reported it. It's a bug that should be fixed but has virtually no/zero implications. Try soft proofing in Develop and then go to Print; it will never match nor designed to match. Consider Print previews as FPO only.

Clearly they should match but at the moment, for me at least, they don't.

Library module - Loupe View - 100%

Develop module - 100%

Toggle from Library to Develop and back and I see the same disconcerting difference that is illustrated in my screen shots above.

So, is this way it is - get used to it?

Or is this a bug in Lightroom that we can reasonably expect to be fixed?

Or is this the result of some issue unique to my setup?