Yank global clipboard

[bpingris]

Reproduction

1. write text in the terminal
2. go to normal mode
3. go to visual mode
4. select some text
5. yank it (press y)
6. paste the content using system clipboard (on mac cmd-v)
7. the pasted content is not what I yanked

When going into visual mode and pressing y it seems to copy the content only in the "zsh vim" session, I can paste the content and it works but when I want to paste (using cmd-v) this content it does work,

Is it possible to yank the selected content into the system clipboard?
thanks!