Answered by : huldar

set(gca,'XLim',[0 1],'YLim',[0 1], 'SortMethod', 'childorder', 'Visible','on');
instead of
set(gca,'XLim',[0 1],'YLim',[0 1], 'Drawmode', 'fast', 'Visible','on');

Source : https://www.mathworks.com/matlabcentral/answers/471875-warning-the-drawmode-property-will-be-removed-in-a-future-release-use-the-sortmethod-property-inst | Last Update : Fri, 16 Apr 21