I have some graphs widgets that plot 2 or 3 items and a sum of them. But quite often I see some weird graph values for the data set sum.


The black line is just a simple item sum aggregation function.

Just by looking at those plots we can see there's something wrong.
Any idea of what would cause that behaivior?
The black line is just a simple item sum aggregation function.
Just by looking at those plots we can see there's something wrong.
Any idea of what would cause that behaivior?