Hello. Periodically I need to connect to my employer's VPN. Whenever I do, all of the open tabs in Firefox will not refresh or connect to new websites. This is especially troublesome for pages that refresh periodically like when viewing email. New tabs open webpages fine. I have tried using a "hard reload" (Shift while using the Reload button) on the already-open tabs as well as clearing the cache through the Settings menu. I've also tried changing the proxy settings in Network settings (Configure Proxy Access to the Internet; No proxy, Auto-detect proxy settings for this network, Use system proxy settings, Manual proxy configuration) Any ideas on how to prevent this problem in the first place or fix it when it happens? Thanks