The line of the timeline only appears until it reaches div's maximum height

[yurifw]

I have a div with the following css:
#timeline{ max-height: 400px; overflow-y:auto; }

when I turn it into a timeline, the following happens:

Seems normal until I scroll the div down:

[RyanFitzgerald]

Good catch, thank you! I'll get working on a fix unless you have already found one, then feel free to submit a PR.