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Given that the page only appears if you include the start page's URL segment in the URL, that would suggest to me that it's due to the website configuration within the CMS settings. Do you have a host name entry set up on your site which matches the host and protocol you're using to access the site? It may also be worth setting up a wildcard host entry on the site just to rule out issues with the site configuration.
The issue was with the of the the controller action [HttpGet] method. Don't know why but the request was going there. It was working fine in CMS 11 but not on CMS 12.
We are in a process of upgrading our CMS & Commerce to latest version CMS 12 & Commerce 14.
We are facing a strange issue.
Pages under startpage on browsing not working & returning json {"result":false}
For Example : I have startpage with url name as “start”. Under StartPage there is standardpage “About-us”.
When browsing www.sitename.com/about-us/ returns json {"result":false} but when we check inside cms edit it works fine.Or if we append startpage url for example www.sitename.com/start/about-us/ it works.
Also I tried adding simple address to “About-Us” page but even simple address is not working and even simple address returns json {"result":false}