Please update to version 57.0.2 for fixes : https://support.mozilla.org/en-US/kb/update-firefox-latest-version May or may not fix issue. Please let us know if this solved your issue or if need further assistance.

You can try these steps in case of issues with web pages: You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files. *hold down the Shift key and left-click the Reload button *press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux) *press "Command + Shift + R" (Mac) Clear the cache and remove the cookies from websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences). "Clear the cache: *Options/Preferences -> Privacy & Security -> Cached Web Content: "Clear Now" "Remove the cookies" from websites that cause problems. *Options/Preferences -> Privacy & Security -> "Use custom settings for history" -> Cookies: "Show Cookies" Start Firefox in <u>Safe Mode</u> to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem. *switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance *do NOT click the "Refresh Firefox" button on the Safe Mode start window *https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems