URLs with parameters not allowed as external shortcut on page

Steps to reproduce

Trying to set a shortcut on a page to an external URL with some parameters. This only works for URLs to sub-pages, and no trailing slashes are allowed prior to the questionmark.

These valid URLs causes validation errors in the CMS UI EPiServer.CMS.UI.7.16.0.

Steps to Reproduce:

1.Go to edit mode on a page in the CMS.

2. Open the Settings tab.

3. Click on manage shortcut.

4. Select shortcut to page on another web site as type.

5. Fill in any of the links below causes validation errors 

   http://awesome.site?key=value

   http://awesome.site/?key=value

   http://awesome.site/page/?key=value

Expected: No validation errors

Note: This one passes validation:

http://awesome.site/page?key=value