Help: context view resource does not work

After a few years away, trying to program site in Revolution. Quiet disappointed it got so complex.. but trying...

But so many strange things. Example in a new context:

• Right mouse click on page resource, to "view'
  Modx 2.1.3 tries to open www.mysite.comthis_is_my_page instead of www.mysite.com/this_is_my_page/

Am I missing something here?

Context settings:

base_path=/
http_host = www.mysite.com
site_url =http://www.mysite.com

site_url should include the base_path — IOW, it should end with a /