An issue in version 8.0 with calculating ENTRY-FIELD sizes for 3-D and native controls was addressed version in 9.0.1. However prior to the fix, some users modified their screens based on the buggy calculation to keep their screens unchanged from 8.0.
Use the V80-3D-ENTRY-SIZE configuration variable to indicate which size calculation should be used. Set to TRUE if you want size calculations for entry fields done as they were in 8.0. Set the value to FALSE (default) to have entry fields sized as they were in 7.0 and earlier.