Incompatibility with alt tab workaround

[jobs-git]

Describe the bug
When performing alt tab, alt-tab workaround fix does not work anymore, i.e. scroll duplication when alt tab-bing to chrome like app returns back.

To Reproduce
Steps to reproduce the behavior:

1. enable both alt tab scroll workaround and coverflow alt tab
2. Scroll in nautilus
3. Alt tab
4. Scroll in chrome

Expected behavior
Does not disable the effect of another extension

Screenshots
na

Logs

JS ERROR: TypeError: this._subSwitchers is null
_activateSelected@file:///home/user/.local/share/gnome-shell/extensions/CoverflowAltTab@palatis.blogspot.com/switcher.js:1054:34
_keyReleaseEvent@file:///home/user/.local/share/gnome-shell/extensions/CoverflowAltTab@palatis.blogspot.com/switcher.js:909:22
@resource:///org/gnome/shell/ui/init.js:21:20

clutter_actor_add_child: assertion 'child->priv->parent == NULL' failed
clutter_actor_add_child: assertion 'child->priv->parent == NULL' failed
clutter_actor_add_child: assertion 'child->priv->parent == NULL' failed
clutter_actor_add_child: assertion 'child->priv->parent == NULL' failed
clutter_actor_insert_child_below: assertion 'child->priv->parent == NULL' failed
clutter_actor_add_child: assertion 'child->priv->parent == NULL' failed
clutter_actor_add_child: assertion 'child->priv->parent == NULL' failed
clutter_actor_add_child: assertion 'child->priv->parent == NULL' failed
clutter_actor_add_child: assertion 'child->priv->parent == NULL' failed
JS ERROR: TypeError: this._subSwitchers is null
_activateSelected@file:///home/user/.local/share/gnome-shell/extensions/CoverflowAltTab@palatis.blogspot.com/switcher.js:1054:34
_keyReleaseEvent@file:///home/user/.local/share/gnome-shell/extensions/CoverflowAltTab@palatis.blogspot.com/switcher.js:909:22
@resource:///org/gnome/shell/ui/init.js:21:20

Your Environment

• Extension version: 48
• Operating System: Ubuntu
• GNOME Shell Version: 48
• Are you using other GNOME Shell extensions?
  • List the other extensions: alt tab scroll workaround and coverflow alt tab
  • Can you reproduce the issue after disabling the other extensions? Disabling or enabling Alt Tab Workaround does not have any effect as using coverflow alt tab disables the effect of that extension

Additional context
Related with lucasresck/gnome-shell-extension-alt-tab-scroll-workaround#46