It's a bug in the gnome-shell extension manager.
I made DING print traces of when it receives enable(). Notice we get two
calls, first from extensionSystem.js:739:18, then from
extensionSystem.js:736:18
Feb 13 09:48:24 ubuntu gnome-shell[2776]: Trace
enable@file:///usr/share/gnome-shell/extensions/d...@rastersoft.com/gnomeShellOverr>
innerEnable@file:///usr/share/gnome-shell/extensions/d...@rastersoft.com/extension.>
enable@file:///usr/share/gnome-shell/extensions/d...@rastersoft.com/extension.js:84>
_callExtensionEnable@resource:///org/gnome/shell/ui/extensionSystem.js:267:38
async*_onEnabledExtensionsChanged@resource:///org/gnome/shell/ui/extensionSystem.js>
_loadExtensions/<@resource:///org/gnome/shell/ui/extensionSystem.js:736:18
createCheckedMethod/<@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:730:46
enableExtension@resource:///org/gnome/shell/ui/extensionSystem.js:290:29
EnableExtension@resource:///org/gnome/shell/ui/shellDBus.js:453:38
_handleMethodCall@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:329:38
_wrapJSObject/<@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:408:34
@resource:///org/gnome/shell/ui/init.js:21:20
Feb 13 09:48:25 ubuntu gnome-shell[2776]: Trace
enable@file:///usr/share/gnome-shell/extensions/d...@rastersoft.com/gnomeShellOverr>
innerEnable@file:///usr/share/gnome-shell/extensions/d...@rastersoft.com/extension.>
enable@file:///usr/share/gnome-shell/extensions/d...@rastersoft.com/extension.js:84>
_callExtensionEnable@resource:///org/gnome/shell/ui/extensionSystem.js:267:38
async*_onEnabledExtensionsChanged@resource:///org/gnome/shell/ui/extensionSystem.js>
_loadExtensions/<@resource:///org/gnome/shell/ui/extensionSystem.js:739:18
createCheckedMethod/<@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:730:46
enableExtension@resource:///org/gnome/shell/ui/extensionSystem.js:285:29
EnableExtension@resource:///org/gnome/shell/ui/shellDBus.js:453:38
_handleMethodCall@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:329:38
_wrapJSObject/<@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:408:34
@resource:///org/gnome/shell/ui/init.js:21:20
In the live session, DING is initially disabled via dconf:
$ gsettings get org.gnome.shell disabled-extensions
['d...@rastersoft.com']
Then, when ubuntu-desktop-bootstrap exits it calls `gnome-extensions
enable d...@rastersoft.com`, which removes it from the `disabled-
extensions` list, and adds it to the `enabled-extensions` list.
Sometimes (why only sometimes?) this two-step process makes it call
enable() twice.
DING could be made more robust against getting enabled twice, but gnome-
shell should not be doing this.
** Changed in: gnome-shell (Ubuntu)
Status: Incomplete => Confirmed
** Changed in: gnome-shell-extension-desktop-icons-ng (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/2098102
Title:
Desktop switching shows windows from previous desktop
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