After opening the browser I can click links and open new tabs perhaps two or three times. Thereafter, a new tab opens with the link in the address bar but nothing happens... refreshing, highlighting the link and pressing enter and even selecting the drop down does nothing. I need to close the browser and start again every time. I don't know if this is related but the issue only arose after installing Mozilla VPN last month (although there have been a couple of Firefox updates since then too). The screenshot shows the back/forward/refresh icons greyed out and nothing happening (this, ironically, was me trying to access the Support page). Any advice?