Heatmap using `px.imshow` stops rendering fully after seemingly arbitrary number of elements from a pandas dataframe

I have a heatmap based on px.imshow in my dash application that renders a dataframe of expression values. Currently, the visualization works fine if the number of dataframe rows is 65000 or less:

However, as soon as I increase the number of dataframe rows ever so slightly to 66000, the heatmap no longer actually shows the values and just returns a partially blank graph:

Hi @matt.sd.watson does go.Heatmap()? show the same behaviour?

Yes, I can confirm that go.Heatmap produces the exact same problem.