Should not destroy() reset zoom and pan settings?

[posterhorn]

Please see this JSFiddle for demonstration.

A global ChartConfiguration is used to basically create a chart and enable zooming and panning.
After zooming manually, destroying the chart and recreating the chart again with reusing the global ChartConfiguration, the scale of the chart is restored to values it had after zooming.

Expected was a recreation of the chart similar to its initial creation (as it is with the second chart using a locally created ChartConfigration shown in the JSFiddle for comparison).

Is not the call of destroy() supposed to already reset the zoom and pan settings in order to leave the global ChartConfiguration unchanged?

[kurkle]

You probably need to clean up the config too. I'd suggest a createConfig function that always returns a new object.

[posterhorn]

Thank you for your answer.

That is an option that definitly works, see JSFiddle.

We were just wondering because the API description says

This will clean up any references stored to the chart object within Chart.js, along with any associated event listeners attached by Chart.js.

We probably just misinterpreted that.

[kurkle]

Sadly the config object gets modified and you have the reference stored outside chart.js, so it can't clean it up.
We should look into having an temporary object where the scale options will be stored by zoom plugin, so the original config stays intact.