If I hover over it, then it display the correct histogram, but the 2D version just shows one single color. This suddenly happened. I didn’t change my code. I also tried resetting settings to default as suggested Histograms displaying wrongly in run panel there, but that did not help.
I also see this - I would really love to be able to see the big version of the little hover-over chart, and have it show the actual values along with axis numbers etc.