I run sometimes more than one virtual machine at the same time, all rodadando in full screen. When I close one, all the others who are in full-screen exits to normal screen and unconfigures the resolution. In my opinion should not take the other windows full-screen mode.
Hello, It seems that you're on outdated build of Parallels Desktop 11, please update Parallels Desktop to the latest build 11.1.0 (32202). You can update to the latest build as suggested in this article. Latest version always available here: parallels.com/directdownload/pd11/Please note that Parallels Tools also needs to be updated (Actions > Update Parallels Tools)