we had some reports running perfectly fine with birt 2.3.2 , in those reports we have some textinput with html . now with upgraded birt engine i.e. 2.5.2 , we are seeing a junk character "â" in the textinput every time there is &nbsp; in the textinput.
can you attach the sample reports?
created an attachment (id=167690)
report run ouput with the issue
created an attachment (id=167691)
rpt design file with the issue
i have uploaded the rptdesign file and the screenshot of the issue
could you please replace
<value-of>i18nutils.getlocalizedstring("lun_not_full_title", locale)</value-of> in html text with a constants like <value-of>"abc"</value-of>, since i can not get the java code
created an attachment (id=167892)
updated rpt design file with no java code

updated rpt design file with no java code
can't reproduce it. is it your browser's character encoding issue? it should be utf-8.
i have checked the encoding of the jsp file in which we are inserting the report output and the encoding it utf-8 only. 

we are generating reports using the following java code.

idesignengine birtdesignengine = birtengine.getbirtdesignengine();
sessionhandle sessionhandle = birtdesignengine.newsessionhandle( ulocale.forlocale(locale)) ;
reportdesignhandle report = null;
ireportrunnable design;
irunandrendertask task = null;
try
{
design = birtreportengine.openreportdesign(report);
task = birtreportengine.createrunandrendertask(design);
task.setlocale(ulocale.forlocale(locale));
task.setappcontext(contextmap);
task.run();
}
catch (engineexception e)
{

}

is there any other encoding i need to specify ?
can you upload the final html output it generated?
my report is now working fine, it was the issue of inputstream and inputreader , with old version of birt runtime even inputstream was working fine , but now when i changed the code to read the generated report through inputreader it is working fine. 

thanks you all for helping me in solving this issue. 

-rohan