Copy and paste in metro

It's incredibly hit and miss for me, to the point where I've pretty much given up on it.

I'd say around 60% of the time things just do not copy at all, and I'm stuck with something I copied hours ago on my clipboard.

I've tried CTRL-C multiple times, right-click and Copy several times, but it doesn't work.

Some times it's perfect. Others nothing at all. I have to load up the desktop and go into Chrome to copy and paste some content into a new email instead of staying within metro.

I've no idea why this happens, has anybody else experienced it?

I've even wiped my hard-drive and reinstalled the Release Preview and it still persists.