Improved security by filtering all HTML configuration strings and abstract syntax trees through allow lists before inserting into the DOM.
Added support for area series in 3D charts.
Added new feature chart.zoomBySingleTouch to provide optional mouse-like selection zooming for touch devices. See #14775.
Added accessibility support for legend title #(14872) and provided more intuitive legend item labels for assistive technology (#14837).
UPGRADE NOTESEXPANDCOLLAPSE
Due to improved security, some tags or attributes may be removed from HTML configuration options like labels or tooltip formats and formatters. Read more in the docs on how to allow them.
66 BUGFIXESEXPANDCOLLAPSE
Fixed #14138, tooltip was displayed outside plotArea for columns when they were exceeding yAxis extremes.
Fixed #13490, point hovering effects such as tooltip stopped working after disabling chart.polar with update.
Fixed #10322, limit local timezone to timestamps without timezone.
Fixed #8095, reset zoom button was not visible after drilldown.
Fixed #14893, removed misleading default value in the labels.format docs.
Fixed #11494, setting z-index on tooltip with outside set to true through chart options was not possible.
Fixed #14351, solidgauge pane flickered on update.
Fixed #14771, incorrect tooltip position on inverted chart with adjusted axis width.
Fixed #14053, plot bands added before update with redraw set to false were not added when dynamically adding plot bands between the update and a redraw.
Fixed #14833, column series axis breaks did not render correctly.
Fixed #14283, problems with dynamically updating the color axis visible property.
Fixed #14858, left and right-aligned callout labels with the anchor above or below sometimes missed anchor lines when there was no room for a chevron.
Fixed #13220, #12788, #12489, #11975, wrong pointer position after changing size or scale on a parent element. Chart.reflow now needs to be called after scale changes and Chart.updateContainerScaling has been removed.
Fixed #14305, original chart options got mutated on update.
Fixed #14830, exporting waterfall chart with stack labels and hidden series threw.
Fixed #8635, zooming variwide chart did not work.
Fixed #8742, some stackLabels did not render with dataLabels enabled.
Fixed #8795, hovering the chart after zooming in and using setData with redraw set to false threw.
Fixed #14549, incorrect clip-path for added axis.
Fixed #13283, an issue with the data module’s CSV parser. Hex colors (and any other strings following a hash) were treated as a comment and ignored.
Fixed #14769, axis label formatter was called with NaN values when the axis was short and series consisted of only null values.
Fixed #13996, #13488, pointer position was wrong after chart element was scrolled inside another element.
Fixed #14773, styledMode pie series not updating color correctly second time.
Fixed a11y issue with absolute positioning, touches #14090.
Fixed the initialization of Time.variableTimezone, it caused Time to sometimes return the wrong time when useUTC was set to false.
Fixed #14623, Point.colorIndex did not pick up Series.colorIndex updates.
Fixed #14584, setting dataLabels.allowOverlap to false did not work properly for sankey series.
Fixed #14624, panning.type enabled panning while panning.enabled = false.
Fixed #14649, dynamically updating visual attributes on points in flag series did not work.
Fixed #14637, setting pointPlacement to between placed line series points on ticks instead of between them.
Fixed #14315, setting X axis extremes outside the chart series’ data range threw.
Fixed #14246, pie point stayed hidden after first legend item click when ignoreHiddenPoint was set to false.
Fixed #14236, stacked area chart did not render correctly with the broken-axis module loaded and a gapSize greater than 0.
Fixed #13948, exported PDFs containing linear gradients with multiple 0 offset stops had errors.
Fixed #13961, datetime axis had missing ticks when Chart.time had half-hour timezone or timezoneOffset set.
Fixed #13804, 3d pie animation in inactive tab threw.
Fixed #13716, annotations added in responsive rules did not work.
Fixed #14746, column chart with null data, datetime axis and useUTC set to false threw.
Fixed #14765, Highcharts.patterns global was missing.
Fixed #14444, boosted inverted chart had wrong clip-path.
Fixed #14244, tooltip in column-based series with multiple xAxis had wrong position.
Fixed #14362, no animation when a series was added dynamically.
Fixed #14426, it was not possible to pan vertically to 0 after zooming.
Fixed #14458, drilling down 3d chart points with the same name threw.
Fixed #14425, last histogram bin sometimes had inaccurate x2.
Fixed #14417, charts displayed parts of the data when min or max exceeded extreme values.
Fixed #14397, networkgraph simulation restarted on series.update().