Strange Error: Pages turns on Night Shift-like colors

[Mobster1983]

So I updated to High Sierra Beta last night and this morning tried to open a Pages document I was working on. When I opened, my external display (but not my MBP display) suddenly changed colors to Night Shift. As soon as I closed Pages, or clicked on another window (settings or Chrome), the display went back to normal. Opened Word and no issues.

This is a very strange issue I have not seen before. Any help? Really annoying trying to work on the Pages file in the middle of the day with Night Shift on. I also went into Settings and changed Night Shift into "Less warm," but the issue still appears.

*Edit* Just confirmed this does the same thing when opening Numbers, but Keynote is normal.

First picture is normal, second is when I open Pages. Looks must more distinct in person.

 

[msephton]

Do you have auto contrast/brightness on your external display?

 

[Nermal]

I wonder whether this could have something to do with graphics switching. Does Apple menu/About This Mac report Intel graphics when Pages isn't running, and AMD when it is?