zsh-syntax-highlighting conflicts with zle yank-pop

[pablox-cl]

I found zsh-syntax-highlighting (nor history-substring-search) doesn't work with zle's yank-pop. Steps to reproduce the bug:

$ zsh -f
% bindkey -e
% hello # press <C-u> to kill the line
% bye # prees <C-u> again to add this line to the yank ring
# press <C-y> # 
% bye
# press <M-y> to rotate the elements on the yankring #
% hello
% source zsh-syntax-highlighting.zsh
# press <C-y>
% bye
# press <M-y>
% bye

$ zsh --version
zsh 5.0.0

I've tried to remap to see if it was a problem with the mapping but it doesn't work either.