Pushable With Number Does Not Work

Hello,

I'm using 8.6.1, and the following code sample:

<Range
                min={0}
                max={1440}
                allowCross={false}
                pushable={60}
                step={15}
              />

Does not result in pushable nodes. If I set the pushable attribute to true instead, it does work, but sets the minimum gap to the step which is 15 (rather than my intended 60).

Am I misunderstanding how the pushable property is supposed to work (based on the readme.md description) or is there a bug in this version?

Start with README.md's description of the pushable property and the Range component entry point, reproducing the provided example with step={15} and pushable={60}. Confirm the intended minimum gap for numeric pushable values; done means the behavior is clarified or the reported case has a regression test and corresponding fix.