Line Stops Rendering After 500 Entries

[GeorgeBroughton]

I have a timeline with 1340 items in it and after scrolling 1/3 ish of the way down the timeline, the line itself stops rendering. The dots and other stuff like the body, title and time still appear, but the line itself just abruptly ends.

After some fooling around, I've discovered it's after exactly 500 entries no matter the style used.

Hope this isn't too much of a bother for you to fix.