Two Docks are shown when Super key is pressed [duplicate]

My system shows two docks when I press the Super key.

I am using Dash to Dock extension.

The problem is resolved and works fine for couple of hours when I change the dock settings to bottom and then revert back to left (side). See the screenshot for resolved issue.

I am looking for permanent solution, kindly let me know if available. Thank you.

Solution 1:

This appears to be a bug with the dash-to-dock extension:

• Bug #855

Some workarounds include:

Toggling the 'Show on all monitors' corrected this issue for me. I'm not sure why

Or

It looks like dash-to-dock isn't properly replacing/removing/etc (or whatever you do to default) the default dock. I was able to

cd /usr/share/gnome-shell/extensions/
sudo mv [email protected] [email protected]

and then Alt-F2 'r' to manually fix it.