"+" characters shown where no character should be

Hi,
I'm evaluating a couple of PDF libraries to see which one I would use. To evaluate Radaee PDF library on android, I have downloaded the Radaee PDF Viewer from the store and opened a reference pdf for our case.

Everything seems fine, but "+" signs are being shown inside the document. They shouldn't be there. Adobe Reader doesn't render any character at those positions. Is this a known issue or am I doing something wrong? Do I need to supply the proper fonts? The PDF uses Helvetica (not embedded). When checking the properties of PDF using Adobe Reader it does say this: "Encoding: Custom"

I can not attach the PDF document as it is confidential.

Thanks,
Christophe

Try to test using the demo project available from Download section.

Without checking the pdf, it maybe a font problem (when the font is not embedded, a default font will be used)
So try to embed the font in the pdf, or programmatically
www.androidpdf.mobi/forum/Android-develo...limitstart=0&start=6