Okular is having problems displaying all of the text in some PDF files. For example, when displaying a Chase Bank credit card statement, the background images and logos are the only thing displayed (and all in the correct location on the page), but the regular text of my statement is all missing. I wish I could attach a screenshot, its strange. I tried messing with Okular’s setting, no luck. This bug is not present with most PDF files. I can use other applications to display the affected PDFs correctly, the problem is just with Okular.
I use OpenSUSE as a full home / office desktop, and have not had problems displaying any kind of PDF in Okular until recently. I cannot say for sure that the problem began with the recent upgrade to Leap 42.1, though I reproduced the problem on two Leap systems which were setup quite differently. It worked fine on 13.1, I did not test 13.2. It is possible Chase Bank changed the way they build PDFs at the time I upgraded to Leap and this bug “appeared”, though I found another file recently similarly having no text.