Whenever I open a .pdf (haven't tried with other formats) with many pages (at least > 5), Preview does this really annoying thing:
I use the Rectangular Selection tool to select an area of the .pdf I want to copy.
When I copy, the page does this:
When I click the area off, then I can see the page again.
Because I tend to make flashcards/store several selections of what I copied with the Rectangular Selection, I'd like to know what I can do to solve this issue.
Some useful information: I'm using macOS Sierra beta. I understand that this means I'll probably encounter more bugs than someone that isn't using the beta, but before installing a Release Candidate, I figured I could learn some stuff. I've tried deleting the .plists for Preview with no luck. When I zoom into the page (after pressing ⌘c and the weirdness happening), the page probably re-renders and the problem goes away. If I press ⌘c while zoomed in, the weirdness ensues.
Any advice on how to reinstall/format the app before that doesn't require a new installation would be much appreciated!