Stop new tab opening
When clicking on a website to play a video, it will open a new tab from a website advertising. How can I prevent the new tab opening?
Opaite Mbohovái (1)
You can do a malware scan just to be sure.
Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.
- switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
- do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window