Solved by KFrank in post #12 
              
              
                Hi Py! 

My conclusion is that your use of .data() is the cause of “does 
not work at all in 1.3.1.” 

Note, what you show below does not replicate the "does not work at 
all " problem – it replicates the “agrees up to expected floating-point 
round-off” so-called problem. 

I assume that this is ru…