odd behaviour for transtion(t) in d3 timer

[SunGuoQiang123]

when i use selection.transition(t) in a d3.timeout or d3.inerval, the transition ease looks like something wrong, but when i use transition().duration(1000).ease(d3.easeLinear) the transition works well. below is the reproduction link

https://codepen.io/sungunguoqiang/pen/wvvxPRq?editors=1011

[mbostock]

You can only inherit from a transition that’s still running. If the transition t has ended by the time your timeout fires, it will be ignored when you pass it to selection.transition; you’ll just get the default timing parameters. You can only inherit when the transition t has no yet ended, and the transition t applies to a parent element of the selection.

[mbostock]

See also #59.