Updating Configuration updates wrong chart

[DigNZ]

I have a dashboard with three custom panels each with charts. They load fine, but if I change the configuration of the second or third charts on the screen, it'll update the display of the first chart leaving the other chart blank.

The page then needs refreshing in order to display the charts correctly again.

It must be related to the ajax that's used to update the panels without a refresh, its losing track of which chart to update. The data stored is all correct as the refresh fixes it.