It seems that the orientation of the legend is depending from the domain of the chroma object provided by the current displayed layer. As chroma provides the capability to invert a domain, the legend orientation is also inverted.
It should be always oriented from bottom to top with the lowest value of the domain at the bottom and the highest value at the top.
It seems that the orientation of the legend is depending from the domain of the chroma object provided by the current displayed layer. As chroma provides the capability to invert a domain, the legend orientation is also inverted. It should be always oriented from bottom to top with the lowest value of the domain at the bottom and the highest value at the top.