PDF pages change color after rearranging on Apple Preview

[aalars 0]

Apple Preview is perfect tool for pdf manipulation: adding, removing and rearranging pages. I've been using Preview this way for about 10 years without fail. Recently I've noticed that pdf-s from Scannable app change colour (turn into red, yellow, purple, etc) if pages in it are rearranged for example (or merged into another pdf). I can not replicate this issue with pdf-s from other sources.

Attached is a screenshot of a three-page scannable scan, where two pages (green and purple) are rearranged, one (white) is in its original location. All three should be white.

What can be the reason behind this?

[Kelsey Sparrow 0]

Also having this issue. 

[aalars 0]

I was sadly not able to resolve this issue. Exported all notes to Apple Notes, and quit Evernote for good. 

[PinkElephant 4,056]

Maybe better use a decent scanner app - Scannable is for me not even in the top 10.

About the coloring - looks weird, is it persistent when the pdf is closed ? What if you save the pdf from Preview instead of closing it ? 

[J Smiley 0]

I’m having the same issue.It doesn’t happen every time, but some files turn pink or purple. If I am combining PDFs with Apple Preview, everything I’ve scanned in scannable turns pink or purple. So frustrating. Any ideas what’s causing this or how to fix it?