Lightroom color issue

[Guest]

Hey, I've searched along the web and didn't find a similar problem.

my problem is when using when opening Lightroom, the ( previously developed) photo looks good. But when i press on the Adjustment Brush, my photo instantly looks under saturated and cooler, and when zooming over a 66% percent the actual saturating and temperature comes back, zooming out less than 50% makes the photo less saturated. ! 

  

[Guest]

Also this is not happening on every photo, like the next few photos from the same session ( also JPEGs) didn't have this issue

[Guest]

I've found a hint 😂 

it's the Calibration panel, it's active when zooming over 66% and it's deactivated when zooming out.