The switching to to different screen sizes according to the defined breakpoints does not work in the editor any more when the editor window is resized horizontally.
The switching to to different screen sizes according to the defined breakpoints does not work in the editor any more when the editor window is resized horizontally.
If you have the XL or XL2 size selected the editor will stick to the edges and scale with the window. Click on a smaller screen size to unstick it.
EDIT: Got it, you have to resize the canvas, not the window to see the breakpoints in action. Sorry for the confusion.