@libreoffice
My post was more one of frustration than an abortive bug report.
I loaded a PDF in LibreOffice, and its two columns of text were overlapping. It works fine in xpdf.
I *do* appreciate the work of those who work in free software. But I've also observed lopsided development in long-term projects. Firefox has left bugs unfixed for decades.
LibreOffice showing such an obvious flaw indicates a larger structural problem than a bug report can address.
Thanks for your quick response.