When an external monitor is attached some windows protrude onto this new monitor

[Alexander Kallenbach]

https://gitlab.gnome.org/GNOME/gnome-shell/issues/846

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I have connected an external monitor to my notebook. The display of the new monitor had some windows protruding that were actually displayed in maximized mode on the internal monitor (GNOME Calendar and Tasks). It wasn't until I selected these windows that they retreated from the external monitor and were maximized only on the internal monitor.

The windows should adjust their resolution immediately after the connection and be displayed only on the internal monitor. There are many cases where I don't want to show what's running on my internal monitor.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: gnome-shell 3.30.1-2ubuntu1
ProcVersionSignature: Ubuntu 4.18.0-12.13-generic 4.18.17
Uname: Linux 4.18.0-12-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Dec 9 00:02:25 2018
DisplayManager: gdm3
InstallationDate: Installed on 2018-11-30 (8 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Thank you for your bug report. The issue is probably an upstream one, could you report it as well on https://gitlab.gnome.org/GNOME/gnome-shell/issues/ ?

[Alexander Kallenbach (kallenbachalex)]

Reported it upstream as well: https://gitlab.gnome.org/GNOME/gnome-shell/issues/846

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 18.10 (cosmic) reached end-of-life on July 18, 2019.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.