Can't get to work in Warp 3 nor 2.11.
Several ways to copy and paste.
Mouse:Left click and drag mouse pointer right or left over the text you want to copy.
Right click mouse to bring up menu.
Select COPY.
Select the location you want to paste to and left click
Right click to bring up menu and select PASTE.
or
Left click the location you want to paste to.
Click both right and left mouse buttons at the same time to PASTE.
Left click and drag the mouse pointer right or left over the text you want to copy.
Keyboard: Ctrl + Insert > to copy
shift + delete > to cut
Shift + Insert > to paste