Weird Decimal issues when a number is X.9

[DougBrowning]

Not sure what is going on here but when you try to sum numbers that end in .9 it does weird things.

I tried .1 through .8 and it works just fine.  Just .9 is off

All 3 and Decimal type with a formula of 

${Loc1FloodWidth1} + ${Loc1FloodWidth2} + ${Loc1FloodWidth3}

On testing it seems that if you have 2 numbers and one is .Even and one is .Odd.

Thanks

[DougBrowning]

Bump.  Still getting this even on a very simple survey.  Attached a simple one.  Seems like a issue.  On 3.7.  Thanks