Hey Gordomac - Thank you for your followup and I know of which you speak. I have tried the same routes with the same outcomes. My hangup is that I visit about twenty (20) sites every day, many of which I have set to different magnification levels on the Fixed Zoom Firefox add-on. Only PPRuNe jumps between the 125% Fixed Zoom setting and 110%, the origin of which is most probably in Windows 11, but perhaps within the site itself!? I adhere to the old saw "If it ain't broke, don't fix it!", but this feels broke and I have struggled to find the solution for a number of months. I'll let you know if I solve it!
- Ed