[TIMOB-26974] JSON.Parse() is converting int to string when number is .9

I'm trying to debug the reson why JSON.Parse() is adding 0000001 at the end of some int numbers. My raw output form the API looks like RawInput {"Weight":10.9,"BodyFatPercentage":20.5} {"Weight":10.99,"BodyFatPercentage":50.5} But when I use JSON.parse(this.responseText); I end up with JSON object that looks like this. And as you can see number 70,9 - 80,9 and 90,9 get somehow converted. And only numbers in 70,80 and 90 Parsed object { BodyFatPercentage = 20.5; Weight="10.90000000000001"; } { BodyFatPercentage = 80.5; Weight="10.98999999999999"; } As you can see the parsed JSON objects property "Weight" is now a string, where BodyFatPercentage is still int. And if the number is .99 we get .989999