url adding ?sclient=gws-wiz-serp in google search

[Markoni]

When I type something in google and end it with a question mark, I get sclient=gws-wiz-serp added to the search. For example, I type: msi mpg 271qrx vs lg 27gs95qe-b?

but what I get is msi mpg 271qrx vs lg 27gs95qe-b?sclient=gws-wiz-serp 

Why is this happening? It is so annoying!

[Standard8]

This is an issue caused by the ClearURLs add-on that will need their authors to fix it.

As a work around, you can disable the add-on, or perform your search directly from the address bar in Firefox.

[grahamperrin]

Matching issues include:

https://github.com/ClearURLs/Addon/issues/409

For my (GitHub) use case, there's a workaround that does not require me to disable the extension.