Hi Miguel, hi all, > https://www.boe.es/boe/dias/2018/04/26/pdfs/BOE-A-2018-5704.pdf
As a data point, on my system with okular 4:20.04.3-1~np1 frameworks 5.72 I don't see any crash, the document is opened, shown as signed, and shows information about forms. This is with the packages for KDE/Plasma/Frameworks from my repositories. Best Norbert -- PREINING Norbert https://www.preining.info Accelia Inc. + IFMGA ProGuide + TU Wien + JAIST + TeX Live + Debian Dev GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13