Visual Editing: validation fails if document contains multiple, same name compounds

If you have multiple compounds with the same name, validation fails,
this is introduced in: CMS-13291
I haven't dig into it too deeply, but following code doesn't make much sense to me:

            if (values.size() != count) {
                throw new BadRequestException(new ErrorInfo(ErrorInfo.Reason.INVALID_DATA));
            }

If I understand it correctly, any document containing more than one compound, and compound contains different value count, will fail.