"Error serializing widget state attribute: interaction" when clicking the reset button

[jasongrout-db]

Describe the bug

There is an error in the console "Error serializing widget state attribute: interaction" when clicking the reset button on a plot.

It seems that clicking the reset button on a plot calls the serialization routine for some reason. However, the interaction attribute only has a deserializer specified, not a serializer, so we end up in error.

To Reproduce

import numpy as np
size = 100
np.random.seed(0)
x_data = np.arange(size)
y_data = np.cumsum(np.random.randn(size) * 100.0)
from bqplot import pyplot as plt
plt.figure(title="My First Plot")
plt.plot(x_data, y_data)
plt.show()

Then click the reset button at the bottom of the plot. Check the browser console for the error "Error serializing widget state attribute: interaction"

Expected behavior

No browser errors when clicking reset immediately after creating a plot

Screenshots

Additional context

My guess is that adding a serializer at

bqplot/js/src/FigureModel.ts

Line 170 in 96b0b93

interaction: { deserialize: widgets.unpack_models },

may do the trick? Or figure out why the serializer is called when clicking the reset button?

[ekungurov]

I've also encountered this issue. Reset and panning don't work.