Confluence REST API pagination startparameter gets doubled

If I'm sending a request to http://[confluencehost]/rest/api/content?spaceKey=[key]&start=0&expand=ancestors,body.view I get back a reported size of 6. If I then send a request to http://[confluencehost]/rest/api/content?spaceKey=[key]&start=1&expand=ancestors,body.view I get back a reported size of 4 and there are 2 pages skipped in the response.

The space centric call to http://[confluencehost]/rest/api/space/[key]/content?start=1&expand=ancestors,body.view works as expected