I was going to read this book:
But trying to read it on screen is very difficult because it is a bitmap font and looks terrible.
I opened it in xpdf and adobe reader it looks much better.
Can you add screenshots of what you get with the three readers, please?
Created attachment 30642 [details]
Created attachment 30643 [details]
I added the default Ubuntu renderer and the xpdf renderer.
I didn't include a screenshot of the adobe reader because it looks just like the xpdf.
Seems it's a cairo backend problem, at least i can see a very noticeable different between splash and cairo rendering here
Note: the differences may seem subtle but they are not. I tried reading several pages and I got tired because I had to spend my energy just decoding the letters rather than focusing on the words.
It works for me now, it looks like a duplicate of bug #5589.
*** This bug has been marked as a duplicate of bug 5589 ***