{"action":"created","issue":{"url":"https://api.github.com/repos/idaholab/moose/issues/5046","labels_url":"https://api.github.com/repos/idaholab/moose/issues/5046/labels{/name}","comments_url":"https://api.github.com/repos/idaholab/moose/issues/5046/comments","events_url":"https://api.github.com/repos/idaholab/moose/issues/5046/events","html_url":"https://github.com/idaholab/moose/issues/5046","id":74559455,"number":5046,"title":"Material not getting correct coupled neighbor values","user":{"login":"friedmud","id":870705,"avatar_url":"https://avatars.githubusercontent.com/u/870705?v=3","gravatar_id":"","url":"https://api.github.com/users/friedmud","html_url":"https://github.com/friedmud","followers_url":"https://api.github.com/users/friedmud/followers","following_url":"https://api.github.com/users/friedmud/following{/other_user}","gists_url":"https://api.github.com/users/friedmud/gists{/gist_id}","starred_url":"https://api.github.com/users/friedmud/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/friedmud/subscriptions","organizations_url":"https://api.github.com/users/friedmud/orgs","repos_url":"https://api.github.com/users/friedmud/repos","events_url":"https://api.github.com/users/friedmud/events{/privacy}","received_events_url":"https://api.github.com/users/friedmud/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/idaholab/moose/labels/C:%20MOOSE","name":"C: MOOSE","color":"0052cc"},{"url":"https://api.github.com/repos/idaholab/moose/labels/P:%20critical","name":"P: critical","color":"ffffb8"},{"url":"https://api.github.com/repos/idaholab/moose/labels/T:%20defect","name":"T: defect","color":"e11d21"}],"state":"open","locked":false,"assignee":{"login":"friedmud","id":870705,"avatar_url":"https://avatars.githubusercontent.com/u/870705?v=3","gravatar_id":"","url":"https://api.github.com/users/friedmud","html_url":"https://github.com/friedmud","followers_url":"https://api.github.com/users/friedmud/followers","following_url":"https://api.github.com/users/friedmud/following{/other_user}","gists_url":"https://api.github.com/users/friedmud/gists{/gist_id}","starred_url":"https://api.github.com/users/friedmud/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/friedmud/subscriptions","organizations_url":"https://api.github.com/users/friedmud/orgs","repos_url":"https://api.github.com/users/friedmud/repos","events_url":"https://api.github.com/users/friedmud/events{/privacy}","received_events_url":"https://api.github.com/users/friedmud/received_events","type":"User","site_admin":false},"milestone":null,"comments":7,"created_at":"2015-05-09T02:11:27Z","updated_at":"2015-05-11T16:58:09Z","closed_at":null,"body":"TLDR: Neighbor material properties are messed up!\r\n\r\nThis is a straight up real bug that could have been affecting applications.\r\n\r\nMaterial inherits from Coupleable.\r\n\r\nWhen using DGKernels (or anything else that invokes the \"neighbor\" system: like Face Constraints and more) a Material will get created for \"this\" side of the interface and the \"neighbor\" side of the interface.\r\n\r\nThe Material that is created to represent the Material properties on the neighbor element is still inheriting from Coupleable... but that Coupleable interface doesn't know that it's supposed to be providing values from the neighbor element.  This means that _any_ coupled values in a neighbor material are actually the values from \"this\" element... NOT the neighbor!\r\n\r\nI have a fix coming for this...."},"comment":{"url":"https://api.github.com/repos/idaholab/moose/issues/comments/100978384","html_url":"https://github.com/idaholab/moose/issues/5046#issuecomment-100978384","issue_url":"https://api.github.com/repos/idaholab/moose/issues/5046","id":100978384,"user":{"login":"friedmud","id":870705,"avatar_url":"https://avatars.githubusercontent.com/u/870705?v=3","gravatar_id":"","url":"https://api.github.com/users/friedmud","html_url":"https://github.com/friedmud","followers_url":"https://api.github.com/users/friedmud/followers","following_url":"https://api.github.com/users/friedmud/following{/other_user}","gists_url":"https://api.github.com/users/friedmud/gists{/gist_id}","starred_url":"https://api.github.com/users/friedmud/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/friedmud/subscriptions","organizations_url":"https://api.github.com/users/friedmud/orgs","repos_url":"https://api.github.com/users/friedmud/repos","events_url":"https://api.github.com/users/friedmud/events{/privacy}","received_events_url":"https://api.github.com/users/friedmud/received_events","type":"User","site_admin":false},"created_at":"2015-05-11T16:58:09Z","updated_at":"2015-05-11T16:58:09Z","body":"Remember: \"neighbor\" elements are not just used in DG.  The mechanism is also used in face-face contact (you also use it in Mortar, right?) and a few other things.  In some of those cases the nodes aren't shared so you would have different values..."}}