Portal.hasPermission returns false if Permission parameter contains multiple Memberships

Issue

We have 2 sites

http://localhost:8080/portal/customers/
http://localhost:8080/portal/administration/

In a portlet, we need to show a link to the "/portal/administration/" site if the user has access to it.

The access permissions for the "administration" site are defined as set as "*:/platform/administrators/admin_group1;*:/platform/administrators/admin_group2;*:/platform/administrators/admin_group3".

The user is linked with the "/platform/administrators/admin_group1" with MembershipType "member".

In our portlet, we are checking the permissions using the following code:

  PortalRequest portalRequest = PortalRequest.getInstance();
  Site adminSite = portalRequest.getPortal().getSite(new SiteId("administration"));
  portal.hasPermission(portalRequest.getUser() , adminSite.getAccessPermission());

But the hasPermission method is returning false.