jeditorpane caret location and string location not in sync

Question

I'm trying to fix a bug in this code that was made for windows but dosent work in linux( I didn't write the code), the location of the caret and the typing location is not in sync. the dot and Mark location are the same and the setMagicCaretPosition dosent work the way I think, any help?(what properties should I monitor)

this program has the same/similair issue kernow

bug report

Answer 1

for anyone who comes across this and cant find an answer try sudo apt-get install ubuntu-restricted-extras

there is no longer an error on either JVM java version "1.6.0_20" Java(TM) SE Runtime Environment (build 1.6.0_20-b02) Java HotSpot(TM) 64-Bit Server VM (build OR java version "1.6.0_18" OpenJDK Runtime Environment (IcedTea6 1.8) (6b18-1.8- OpenJDK 64-Bit Server VM (build 14.0-b16, mixed mode)