Datashader with HoverLayer

I tried to add HoverLayer to a datashader image and the hover data initially appears, but when I zoom in, the hover functionality doesn't seem to work.

I was using the nyc_taxi demo notebook as the basis, but with some modifications to plot my own data. It successfully plots the data and interactive zooming works, but it seems something is not quite right with the hover layer after zooming.

##Example:
import numpy as np
from functools import partial
from datashader.bokeh_ext import HoverLayer

x_range, y_range = ((-10975134.269,-10512411.001), (4414961.940,4896987.468))

def create_image90(x_range, y_range, w=plot_width, h=plot_height):
cvs = ds.Canvas(plot_width=w, plot_height=h, x_range=x_range, y_range=y_range)
agg = cvs.points(df, 'X_CORD', 'Y_CORD', ds.count())
img = tf.shade(agg.where(agg>np.percentile(agg,90)), cmap=inferno, how='eq_hist')
return tf.dynspread(img, threshold=0.3, max_px=4)

p = base_plot()
p.add_tile(STAMEN_TERRAIN)
export(create_image(*NYC),"NYCT_90th")

hover_layer = HoverLayer(agg=cvs.points(df, 'X_CORD', 'Y_CORD', ds.count()),
extent=(-10975134.269,4414961.940,-10512411.001,4896987.468),
field_name='Average Call Count',how='sum')
p.renderers.append(hover_layer.renderer)
p.add_tools(hover_layer.tool)
InteractiveImage(p, create_image90)