This ctrl+w shortcut gets me all the time when using a web based Spice session to work on VMs and the experience is similar to getting wired earphones yanked ou

This ctrl+w shortcut gets me all the time when using a web based Spice session to work on VMs and the experience is similar to getting wired earphones yanked out of your ear. There might be a way to inhibit this behavior but I never looked into it because I use it to close browser tabs too.