2.1b7 Author field behaves differently
In Z 2.0.9 I used some additional information in author field (eg ERAF, f. 1, n. 4, s. 5350) and for my purposes it served the need and it was in citations displayed correctly. Since doing the update to 2.1b7 the field behaves differently and now I only get some of the information in author field (ERAF, s. 5350). Seems that characters between commas are removed. Is this a bug?
The behavior you're seeing is caused by an undocumented feature of the citation processor, intended for the support of institutional authors. It is treating the middle portion of the string as a set of intervening committees, with the ultimate subcommittee on the left, and the overall institution on the right.
You can get the literal content to render by placing double quotation marks around the content of the field. That's a workaround, but since your field content is already very non-standard, that may be an adequate solution.