When enabling the columnMenu of a Grid, it should be hidden by default on all expand type columns (when using grouping or detail row). It makes no sense for it to appear in the headers for these columns as the sorting and filtering functions do nothing.
I'm aware the columnMenu can be enabled on individual columns, rather than the entire Grid, but the menu should not appear for columns where it has no purpose.
The axisRanges property of the zoom event when you zoom on a chart object is empty, It should contain the ranges of the axes in the zommed area.