highslide-software/highcharts.com — Issue #726: Panning chart and date input
Author: hfrntt
Created: 2012-01-28 17:48:00+00:00
State: open

I'm not really sure if it's an issue or something related with dataGrouping, anyway:
1. Open this demo: http://jsfiddle.net/hfrntt/SaYVY/
2. Put this date in "from" input: 09/23/2009 and hit return
3. Usually date input changes to other day (sometimes 21st, sometimes 22nd)
4. When you pan chart to the left and then back to the right, date input will show you 17th -18th or something similar