I'm using the latest FreeBSD port builds of EFL, elementary and terminology.
I was trying to copy a SSL certficate from a remote SSH session to a local terminal. It works if I open my remote session via a urxvt terminal and my local vim via urxvt. If I use terminology for the remote SSH session and urxvt for the local it works as well. However, opening vim via terminology on the local terminal and my insert gets truncated. It doesn't seem to matter if I use urxvt or terminology for my remote SSH session.
It seems to truncate at about 30 lines of text.
I'm using the X buffer and not the copy / paste buffer. ie: select via mouse and then Shift-Ins or middle-mouse click to "paste".