It appears that some characters in the Turkish alphabet are special for HTML and in most cases should be used with HTML entities. On other side these entities break the proper content for the PDF export.
The solution for this problem is to disable the filter, so that these characters would not be converted to entities and preserve their proper content.
You can find attached a demo project, which could be utilized to test the export functionality with the suggested solution.
Regards,
Ianko
Telerik
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