where is the xlabel in yyplot?

The help on http://de.mathworks.com/help/matlab/creating_plots/plotting-with-two-y-axes.html suggests:

Label the left y-axis by passing the first axes to the ylabel function. Then, label the right y-axis by passing the second axes to the ylabel function. Label the x-axis using either axes.

ylabel(ax(1),'Semilog Plot') % label left y-axis
ylabel(ax(2),'Linear Plot') % label right y-axis
xlabel(ax(2),'Time') % label x-axis

But the xlabel does not appear in my matlab 2015a plot nor does it on the help page.

Edit: As a workaround

xlabel(ax(1),'Time') % label x-axis

worked. What did I do wrong? Or do matlab plot commands just always need a "work around"?

[Hiskiel Stephanus]

Very funny. You actually have the answer.

Stop panicking

Answer 1

[Jan]

Very funny! You've found a documented bug.

 What did I do wrong?

Nothing.

 Or do matlab plot commands just always need a "work around"?

No, only sometimes.