Copy and paste in Alpha 24 needs some help.
Command-C sometimes works, but often does nothing. This is just a bug, plain and simple.
At first I thought that the right-click menu was misbehaving. I would repeatedly get a Greek word instead of my highlighted text. I finally realized that what it is copying is defined by what section of the right-click menu is active. In my case, Lemma was active, so I got the first Greek root in the selection. While this is a great feature, the implementation leaves much to be desired.
I suggest that when you right-click a selection, the right-click menu always gives you the ability to copy it immediately, without clicking two more times. That is just normal UI behaviour, and I know of no other program that does not follow that behavior.
I understand the purpose of having the ability to copy other things than the selection via the right-click menu. However, the proper way to do this is to have the common stuff at the top: A copy that always copies what you have selected. Further down the menu you can still have the section-specific copy, but one should not have to click multiple times just to copy the selected text.