automator - display webpages - high sierra

When a URL containing a question mark, for example http://scholar.google.com.au/scholar?q="test", is passed to the Display Webpages action in Automator it is converted as follows:

Sierra (10.12.6) - https://scholar.google.com.au/scholar?q=%22test%22

High Sierra (10.13.1) - https://scholar.google.com.au/scholar%3Fq=%22test%22

The former works, but the latter fails because scholar.google does not recognise %3F.

Is there any workaround for this with High Sierra?

Thanks