I really like the WI client app under Mac OSX, but the fact that it does not allow me to copy text annoys me the most! It does not allow copying text from any part of the app, neither by the shortcut ⌘C or via the right-click menu as you can see in this screenshot.
The only way to copy text is to open an issue for editing, then copy the needed text and close it without saving. This is time consuming and error-prone!
I hope you can enable copying text in the next release of the WI client, or as a quick patch fix.