highslide-software/highcharts.com — Issue #801: [Highstock] Flags not on series with step = true
Author: skojin
Created: 2012-03-02 11:26:10+00:00
State: open

http://jsfiddle.net/nS9xm/1/

When series have step = true, flag have wrong Y position. Looks like it still try approximate Y for linear graph.