Honestly y'all should try using the other sub forums on this site, they are extremely helpful.
I've noticed there are Resolve specific employees and forum member that seem to rarely visit the General Discussion/Cinematography sub forum. My only guess is that like most, they have become tired of the stupid BS in this group.
Or maybe in the Cinematography group they just let us talk among ourselves to handle "Cinematography" issues, but the other subforms have a flurry of Green, Blue, and Orange names responding to questions daily.
Every time I have a Resolve issue I post in that forum and it's answered promptly, courteously, and for the most part they always solve my issues.
I had the issue you have been dealing with, the increase in exposure when exporting a jpeg or finished video, minus the undersaturation which maybe just a side effect from the increases of 1.5 stops in exposure.
Here is the thread. Paul and Antoine hit the nail on the head for me, and after unchecking the "Use Mac color display profile for viewer" box located in the project settings, it completely resolved my issue. Pun intended. lol
viewtopic.php?f=21&t=47679 Hope this helps!
Edit: The way I had it explained to me is that Resolve has always been grading it how it exports. It's just that Mac owners have been viewing the original file wrong(darker) with our monitors, which has made us over compensate the color grade to the original file. So the export comes out overexposed because we overexposed it without knowing.