I just installed version 4.6 released on July 29, 2021, and it shows unexpected problems on my iMac running Big Sur 11.5.1. The program can’t remember its status of ON – OFF, i.e., the first time I launch Safari for instance it scrolls well but then if I open another Safari page, scrolling smoothly stops as if it’s been switched off. I need to open “Smart Scroll” and switch it on and off to solve the issue but then again as soon as I open a third page it’s Deja vù once more. I even restarted my Mac serveral times but to no avail. I had to return to version 4.5 which functions flawlessly. Does anyone else experience this issue? Fariborz AMIRSHAHI – Verona (Italy)