In reference to issue number 1588, I open this one as the issue is not actually resolved. After patching conemu, copy and pasting works, but the arrow key behaviour is broken (command completion).
To cite myself:
Up and down [arrows] go through history, but before doing this [(updating conemu)], when I wrote "ssh" it would only cycle through my previous ssh commands. Pos1 and End still don't seem to do anything... It's odd...
I'm on Win 10 Pro 1803 17134.81