Fixed #14780, offline exporting charts with HTML content to PNG or JPEG fell back to the export server even in browsers that supported it.
Fixed issue with extraneous table caption HTML encoding in the export data module.
Fixed #15701, tooltip text alignment broke when setting font size.
Fixed #15811, setting title.verticalAlign to middle did not vertically center the title completely.
Fixed #15667, scatter line showed on hover after updating lineWidth to 0.
Fixed #15639, error when calling removePlotBand after destroying Axis.
Fixed #9612, panning after zooming sometimes broke with pointPlacement set to on or between.
Fixed handling of local time with Safari 14.1.
Fixed #15771, drilldown failed when points were cropped from the start of the series.
Fixed #14403, tooltip covered interactive elements like the legend, buttons or annotations. Added a CSS class, highcharts-no-tooltip that can be applied to elements to prevent the data tooltip covering them.
Fixed #15746, heatmap select state color did not work correctly.