Since there are no T.Chinses demo resource files, the following S.Chinse resource files will be picked up when running in T.Chinese locales:

./jfc/Notepad/resources/Notepad_zh.properties
./jfc/Stylepad/resources/Stylepad_zh.properties
./jfc/Stylepad/resources/Notepad_zh.properties
./plugin/jfc/Notepad/resources/Notepad_zh.properties
./plugin/jfc/Stylepad/resources/Stylepad_zh.properties
./plugin/jfc/Stylepad/resources/Notepad_zh.properties
and the jar files containing above files.

To fix the problem, the files need to be renamed to _zh_CN.properties and corresponding makefiles updated.