https://connect.mozilla.org/t5/discussions/how-to-disable-the-nova-design-for-the-preferences-window/m-p/127422#M50533 <P>I am using Firefox 152.0b7 on Linux desktop. The new Preferences window (Nova design) on a FullHD screen (1920x1080) uses less than 50% of the horizontal screen real estate, seems to be conceived for mobile devices (see screenshot). In my opinion this is a significant UI regression.</P><P>I have set to "false" (and restarted Firefox) but I can't go back to the previous design for this window:<BR />- browser.settings-redesign.enabled<BR />- browser.nova.enabled</P><P>Thanks</P> Wed, 03 Jun 2026 20:05:11 GMT ff2 2026-06-03T20:05:11Z https://connect.mozilla.org/t5/discussions/how-to-disable-the-nova-design-for-the-preferences-window/m-p/127422#M50533 <P>I am using Firefox 152.0b7 on Linux desktop. The new Preferences window (Nova design) on a FullHD screen (1920x1080) uses less than 50% of the horizontal screen real estate, seems to be conceived for mobile devices (see screenshot). In my opinion this is a significant UI regression.</P><P>I have set to "false" (and restarted Firefox) but I can't go back to the previous design for this window:<BR />- browser.settings-redesign.enabled<BR />- browser.nova.enabled</P><P>Thanks</P> Wed, 03 Jun 2026 20:05:11 GMT https://connect.mozilla.org/t5/discussions/how-to-disable-the-nova-design-for-the-preferences-window/m-p/127422#M50533 ff2 2026-06-03T20:05:11Z