Hi,
Please also try after clearing the cache and cookies: Tools (Alt + T) > Clear Recent History, choose Everything in Time range to clear, Cache and Cookies in Details and Clear Now. Clear Recent History
If the problem persists, please also check in Safe Mode.
Problematic Extensions
Troubleshooting Extensions and Themes
Uninstalling Add-ons
Uninstalling Toolbars
Safe mode disables the installed Extensions, and themes (Appearance) in Tools (Alt + T) > Add-ons. Hardware acceleration is also temporarily disabled - the manual setting is Tools > Options > Advanced > General > Use hardware acceleration when available. Options > Advanced. All these settings/add-ons can also be individually or collectively disabled/enabled/changed in Firefox normal mode to check if an extension, theme or hardware acceleration is causing issues.
Hi,
Please also try after clearing the cache and cookies: '''Tools''' ('''Alt''' + '''T''') > '''Clear Recent History''', choose '''Everything''' in '''Time range to clear''', '''Cache''' and '''Cookies''' in '''Details''' and '''Clear Now'''. [https://support.mozilla.org/en-US/kb/Clear%20Recent%20History Clear Recent History]
If the problem persists, please also check in [https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode].
[http://kb.mozillazine.org/Problematic_extensions Problematic Extensions]
[https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes]
[http://support.mozilla.com/en-US/kb/Uninstalling+add-ons Uninstalling Add-ons]
[http://kb.mozillazine.org/Uninstalling_toolbars Uninstalling Toolbars]
Safe mode disables the installed '''Extensions''', and themes ('''Appearance''') in '''Tools''' ('''Alt''' + '''T''') > '''Add-ons'''. Hardware acceleration is also temporarily disabled - the manual setting is '''Tools''' > '''Options''' > '''Advanced''' > '''General''' > '''Use hardware acceleration when available'''. [https://support.mozilla.org/en-US/kb/Options%20window%20-%20Advanced%20panel?as=u Options > Advanced]. All these settings/add-ons can also be individually or collectively disabled/enabled/changed in Firefox normal mode to check if an extension, theme or hardware acceleration is causing issues.