I want to go back to 147.0

Hi, Split Screen won't activate unless you click the corresponding option yourself.

Hello https://www.firefox.com/en-US/firefox/150.0/releasenotes https://support.mozilla.org/en-US/questions/1578301#answer-1813624, is it, your question If you, don't want use Split View https://support.mozilla.org/en-US/kb/split-view-firefox You can try 1 - Go to configuration editor https://support.mozilla.org/en-US/kb/about-config-editor-firefox 2 - Enter a search term '''browser.tabs.splitView.enabled''' You can double-click on the preference to set the value to '''false'''