Scrollbar does not work in PDF documents
When FF opens an PDF document the scrollbar does not work. If it is a one page document I can use Page up/Page down to toggle between top and bottom of page. If it is a multiple page document I can use PageUp/Page down and the arrow keys.
Alle antwurden (1)
Try running Firefox in Diagnose Firefox issues using Troubleshoot Mode. If it works correctly in that configuration, then one of your add-ons is the culprit.