Describe the Issue
The non-mobile SDUI requires the browser window to be at least 1285 pixels wide. As soon as the window is 1284 pixels wide, it switches to the mobile interface.
Shouldn't this minimum for the non-mobile interface be 1280 pixels wide instead?
Additional Information:
Tested with completely stock Firefox in the live ISO for Linux Mint Xfce 22.3 (non-HWE)
You can also simulate this by editing the toolkit.zoomManager.zoomValues setting in Firefox's about:config to include the zoom value 0.99 while also having your desktop resolution set to a 1280 pixels horizontal resolution:

Describe the Issue
The non-mobile SDUI requires the browser window to be at least 1285 pixels wide. As soon as the window is 1284 pixels wide, it switches to the mobile interface.
Shouldn't this minimum for the non-mobile interface be 1280 pixels wide instead?
Additional Information:
Tested with completely stock Firefox in the live ISO for Linux Mint Xfce 22.3 (non-HWE)
You can also simulate this by editing the
toolkit.zoomManager.zoomValuessetting in Firefox's about:config to include the zoom value 0.99 while also having your desktop resolution set to a 1280 pixels horizontal resolution: