Matlab2015a/Simulink Dynamic Lookup Table

I have a simulation combination of matlab/Simulink that I have been using for a few years, After upgrading matlab from 2013b to 2015a, the Dynamic Lookup Table block in my Simulink produce the following error: "the xdat vector is the breakpoint data, which must be strictly monotonically increasing"

Looking into the data I realized that xdat includes two consecutive numbers that are similar. Using matlab 2013b when I feed the same xdat, there are no errors due to not being "strictly monotonically increasing" however I get the error in 2015a, what has changed? and how can I fix it?

Thank you,