It can be resolved by disabling this option: "To find the setting, open Chrome settings, type "Content settings" in the search box, click the Content Settings button, and view the fourth item under Cookies." Uncheck the box "Block third-party cookies and site data".
Problem is that I can't ask people to disable this option, this is not something that makes a problem in other Gapps integration apps i have,
Does someone know what could be the issue and how to fix this?