Stretch problem after AIX server patch level upgraded to v6.1 TL9 SP3

I am using Jasper Report library 4.5.1 in AIX platform. Recently, the server patch was upgraded from v6.1 TL7 SP5 to v6.1 TL9 SP3. However, a textfield in page header is not stretched completely after server patch upgraded. Before the server patch upgraded, the textfield was able to stretch to 5 lines to show all the text. However, after server patch upgraded, it is stretched to 3 lines only and the text is truncated. Any idea to resolve this problem?

Before upgrade:

After upgrade: