The pasting issue seems to be the same as #143 and is an issue with neovim. There's an issue created about it.
I typed | as fast as possible and I could not achieve the |;2u. However looks like <s-space> does that in terminal mode. Interestingly, <s-tab> and <s-arrowkeys> also have weird behaviours.
OSX 10.11.6 neovim-dot-app-HEAD-68cf699
|
fast sometimes adds what looks to be extra escape caracters|;2u
. Same thing happens with}
turning into};2u
.