Tooltip has trouble displaying floating point values. Shows expanded decimal instead of rounded.

[Rahul-Vig]

For example I set a range from 1 to 1.4 and at certain increments the tooltip will display 1.3800000000000001

[benjaminbillet]

Got the same issue with a range from 0.3 to 5, with 0.1 increments: some values are not rounded properly. For example, 0.9 becomes 0.9000000000000001