Use figure to create a new figure window for plotting the next plot.
Live scripts will continue to use the same figure for all plotting unless you explicitly create a new one. If you use section breaks, what you see in each section are snapshots of the same figure, rather than new figures (unless you've created it with figure).
tiledlayout(1,2);
[X,Y,Z] = peaks(20);
% Tile 1
nexttile
surf(X,Y,Z)
% Tile 2
nexttile
contour(X,Y,Z)
% New plot
figure
x=1:5;
y=x.^2;
plot(x,y)
