I have found something like a bug with the report writer introduced in 11.1. I had a template that used a table, the elements write rows, the package wraps the table. I had used the trick of removing the newlines, so that the tables got merged together if the template was run over multiple packages. So, I created a master document, model document that references the right template and included the packages I want. It worked well. Since 11.1 it will not iterate over the packages. A single package still works fine. It took me some time to figure out that by putting a newline after the table would resolve the issue, and I settled for removing the newlines manually.
Any other change proved making no difference, from .docx to .rtf, altering the table layout, nothing. But that newline after the table made a world of difference. I'm not sure what it should be doing, but I'm very tempted to go back to 11.0, because I use that table without newline trick quite a lot and it's been working for some time, deduced from the fact that I've been using it for years.