In Turkish locale "TR" double values are multiplied by ten on every page load

The steps to get the error.

1 - Change your locale to "TR" (Turkish)
2 - go to edit employee page on showcase application - http://www.planetstruts.org/struts2-showcase/employee/save.action
3 - Fill only the salary field with "10"
4 - Press Save, it shows the required fields and makes the salary field "10.0"
5 - Press Save again without editing anything, it gives the error for required fields and makes the salary field "100.0"
6 - Alter the salary field. Make it "100,0" (change dot with comma)
7 - press save, here it is not multiplied by 10, but it changes the salary field value from "100,0" to "100.0" again.

Here is the problem. In Turkish(TR) locale the decimal separator is "comma", not "dot". So it doesn't convert them according to the TR locale which is the locale of my browser. When I press save at the 4th and 5th steps it should write "10,0" using the locale of the browser.

Note : When I change my locale to "EN" everything works fine.