"put selection" goes to system clipboard

[QimatLuo]

1. prefix + [
2. kvb (vi mode to select last word)
3. Y (shift y)

It works to auto paste my selected text to the command line. But the problem is it also overrides the system clipboard..

How can I check which setup is incorrect? here is my setup: https://github.com/QimatLuo/tmux/blob/5c858f3aa184f630352dd4bb8c3aafac9f719e43/tmux.conf