I've been having trouble copying and pasting events/actions/conditions for a while now. I would have posted a bug report but I can't find a common way to reproduce it. For example, I clicked one event, scrolled to another, held down shift, clicked the second event, did ctrl-c, went to another layout and pasted, and it worked fine the first time - but the second time I did that series of actions to copy and paste another bunch of events, it refuses to copy and it pastes the first batch that I copied.
I've the same problem. And copying sprites between applications doesn't copy everything (frames' pictures).
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This should be fixed in the next build.