JS ERROR: TypeError: windowActor is null

Solution Verified - Updated -

Issue

  • GNOME desktop session hang/freeze with "gnome-shell 100%CPU". The following errors are observed in the logs:
journal: JS ERROR: TypeError: null has no properties#012_addWindowEffect@resource:///org/gnome/shell/ui/closeDialog.js:82:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012vfunc_show@resource:///org/gnome/shell/ui/closeDialog.js:153:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22
journal: JS ERROR: TypeError: null has no properties#012_addWindowEffect@resource:///org/gnome/shell/ui/closeDialog.js:82:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012vfunc_show@resource:///org/gnome/shell/ui/closeDialog.js:153:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22
rsyslogd: imjournal: 17674 messages lost due to rate-limiting
gnome-session: gnome-session-binary[76309]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 1
  • Unresponsive Gnome session due to JavaScript errors.
JS ERROR: TypeError: null has no properties + meta_display_ping_timeout

Environment

  • Red Hat Enterprise Linux 7.7
  • Red Hat Enterprise Linux 7.8
  • mutter
  • gnome-shell

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