Better default value for legend.valueDecimals for color axis with data classes. Now it preserves the decimals of the from and to settings by default.
Improved the UX on legend items when using a color axis with data classes. Hovering now renders other map areas as inactive, and clicking the legend item renders them as null rather than completely hiding them.
HIGHCHARTS CORE v10.3.0 CHANGES
These core changes also apply to this moduleEXPANDCOLLAPSE