Originally Posted by samhy
I don't think it is a bug. The PDFs and the epubs are two different formats using different softwares to be read, so the features are different.
I would have to check, but I don't think that I can use the dictionaries when reading a PDF file on my 650 either.
Well, when I read a book in the ereader I expect to use the dictionary regardless of the format, I think it's a lack of a basic feature.
I can say for example that on kindle it works as in the azw/mobi.