: Ubuntu terminal receives unexpected Ctrl+C (SIGINT) when dragging windows in Parallels Desktop

Hello Parallels Support Team,

I'm seeing a keyboard/input issue in Parallels Desktop on macOS with an Ubuntu 22.04 guest VM. When I drag windows in the Ubuntu GUI, the active terminal session receives an unexpected Ctrl+C, which interrupts the foreground process (SIGINT). This happens without me pressing any keys.



Signal-level confirmation
If I run:

bash
bash -lc 'trap "echo GOT_INT" INT; trap "echo GOT_WINCH" WINCH; echo "ready"; while :; do sleep 1; done'

and then drag a window, I repeatedly get:

^C
GOT_INT

This indicates the guest receives SIGINT

 

It also occurs when I select text in the Terminal window.