I have several problems with copy & paste in the linux version.
- middle mouse button copy & paste, pastes a wrong item
- ctrl-v pastes wrong items after ctrl-c or ctrl-x. This bug does only occur after some time of work with codeblocks. A workaround is to press ctrl-c or ctrl-x two times.
By the way: These things are not new bugs. They are in codeblocks since I have tested it the first time a year ago.