When i create a chart using "stacked columns and line" i get only 3 stacked 
Values, the 4 Value get´s a separate column. After saving the file, close calc, 
reopen the file and click the chart, i get die correct view.

I have uploaded an example files, but it is unfortionality only available to 
15th of August.

Copying the values and creating a chart in a new, empty document, the error 
happens again. It is hard to desribe, so i made screenshots for every step and 
put them into the document.