Hi Lowex,
That's a good guess (the add-on).
You mentioned that you are using FireFox. One of the things that I do when something is strange within a browser is to try different browsers (Safari, Chrome, Opera). Have you tried them as well?
Also, and I know you probably do not want to hear this, but how many links are there that you'd have to reset within the document as opposed to how many ligatures you'd have to reset.
Oh, I just thought of one other rather complex way to do this but it does require that you have InDesign: get a good copy without the ligature, Export that into Word document. Import the Word document* into InDesign and within ID you can automatically create all HTML links to functional links then convert it back into a PDF. Yeah, very very convoluted but in a "worst case scenario."
*Note: I know that within Word you can have it do the automatic html-links but I'm not all that knowledgeable on how to export that into functional links to PDF.
Hi Gary,
First of all I would like to say thank you for your time, I really appreciate it.
Second, I think I fixed the problem. For some reason I only got ligatures on that page and the only difference was the font used there. So I downloaded the fonts “noto sans” and “noto serif” which were used on this page and now the ligatures are gone.