Firefox rends Facebox improperly on my home desktop running Windows 7. I want to do a complete uninstall, but it doesn't let me.
I have tried uninstalling Firefox multiple times to fix this issue, but I can't. Every time Firefox loads Facebook, it rends the page wrong, so that the blue bar occupies half the screen. For a while I got around it by using Nightly, but Nightly just started doing the same thing. I have tried to uninstall Firefox completely, but even when I do an install, it finds all my old settings.
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If you have increased the minimum font size then try the default setting "none" as a high value can cause such issues.
- Tools > Options > Content : Fonts & Colors > Advanced > Minimum Font Size (none)
Make sure that you allow websites to choose their fonts.
- Tools > Options > Content : Fonts & Colors > Advanced > [X] "Allow pages to choose their own fonts, instead of my selections above"
Reload web page(s) and bypass the cache.
- Press and hold Shift and left-click the Reload button.
- Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
- Press "Cmd + Shift + R" (MAC)
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode