Weird line to the right of box after saving the plot

I was plotting a graph and saved it to jpg using saveas

I used xlim to limit the range of x axis, but there are some line remain on the graph to the right of the graph.

This didn't show up in the figure box of MATLAB

but shows in the jpg file I save

please help me, thank you!

Here's the code I use

subplot(2,2,4)
yyaxis left
h(1) = plot(t_vec,Chiller_RAC_Load_Tons*3.5168525,'LineWidth',1);
hold on
ylabel('Chiller Power [kW]')
xlabel('Time')

yyaxis right
h(2) = plot(t_vec,Ptotal,'LineWidth',1);%Plotting HVAC Power

xlabel('Time')
ylabel('Fan Power [kW]')
title(sprintf('Chiller Power and Fan Power %s/%s/%d',Month_str,Date_str,Year))
hold on;
xline(E1_start,'LineWidth',1,'Color','black')
xline(E1_end,'LineWidth',1,'Color','black')
xline(E2_start,'LineWidth',1,'Color','black')
xline(E2_end,'LineWidth',1,'Color','black')

%legend(h(1:2),'Chiller Power','Fan Power')

xlim([5 20]);
xticks([7 9 11 13 15 17 19 21 23])
xticklabels({'7:00','9:00','11:00','13:00','15:00','17:00','19:00','21:00','23:00'})
set(gca, 'FontSize', 10);
saveas(gcf,sprintf('Chiller Tonnage and Fan Power %s-%d-%d.jpg',Month_str,Date,Year))

[Adam Danz]

Weird. Does changing the axes' clipping property make a difference?

https://www.mathworks.com/help/matlab/creating_plots/clipping-in-plots-and-graphs.html

[Han Lee]

Thank you for your reply!Clipping didn't work, instead I switch the left two pictures with right two pictures and the lines disappeared.

[Adam Danz]

Hmmm it must have been a quark with the double axes. Glad you found a work around.