I have successfully implemented Qdabra Leave Request form in one of my environments. "Form Name" property is promoted as "Single line of text" type and is visible under library columns.
When I try to implement this solution in another environment, "Form Name" property is promoted as "Computed" and is not visible under library columns. I can see it only under template columns. I can open form in browser and submit it. And I see that xml file under All documents. But after that, everything is broken with this file. When I click on "View Properties", "Edit Properties", "Workflows", "Version History" and etc., I see only blank windows in browser. I disabled template, deleted content type and InfoPath columns, then uploaded template again, but the result is the same.