Can not copy and paste within Chrome from time to time Chrome Mac is a bit dodgy, I can not use copy/paste function from time to time, both  Cmd ⌘   C   and right-click menu. I must reopen it to enable copy/paste again.

OS X version is 10.10.3, Chrome version is 41.0.2272.118

Firefox and Safari do not have such problem.
Only thing I found is to quit and restart Chrome.