Description of the problem or steps to reproduce

Select something and try to paste it with middle mouse button.
If you move cursor while the middle mouse button is still down, multiple paste events happen, leading to more than one paste.
Clipboard mode is set to "terminal".
If you hold Shift while pasting, same doesn't happen, it pastes only one time for each click.
Demo: Video

Specifications

Commit hash: 225927b
OS: Linux (Arch Linux, Sway WM)
Terminal: alacritty