Arch, cinnamon all up to date. The issue even survived a fresh install. I have no idea how to further troubleshoot this thing.
I have tried using xfce and gnome to see if it was a cinnamon issue. Still persists though. Chrome, Chromium or Opera, all bring up the same issue.
No copy paste in any application.
Well, that is not completely true. I can paste. But it will paste the last thing I copied before launching a web-kit based browser.
Any ideas as to how I could further investigate this?