I'm listing this on ExtJS 6 side (rather than docs) because I believe it is not a problem with the documentation, but a missing piece of information on the comments of the newly added config option in Ext.chart.legend.Sprite.marker.

There's no type information on the comments, I imagine it should have something like this in first comment line:

Code:
@cfg {Sprite} marker
Here's the offending code that this comes from: http://docs.sencha.com/extjs/6.5.1/c...js.html#line94
And here's the documentation page with the missing type: http://docs.sencha.com/extjs/6.5.1/c...tml#cfg-marker

This is kind of a minor issue. Just reporting it as I noticed while reviewing the code, I hope this would be appreciated.