Could I ask what did you do. I am dealing with the same issue whith text not stretching. it works under Report Previewer however JapserFilManager just cuts off the text and I have just clickd every combination with overflow and different fonts. its the same for XLX, PDF or streight japserViewer and as I mentioned the Report Viewer under editor works. we use springframework.boot 2.1.3, JPA, jasperreports 6.4.1, ar.com.fdvs jasper cor fonts 1.0, jaxb-api, glassfish and swagger2 2.0 UTF-8 encoding much appreciate it.