Plotting breaks after show() + CTRL-C

[Anders Logg (Chalmers)]

When using plot() from a Docker container, show() brings up the plot in my browser. An instruction is printed that I should press CTRL-C to continue, but that breaks further plotting. A test snippet follows:

from fenics import *
import matplotlib
matplotlib.use('webagg')
import matplotlib.pyplot as plt
parameters['plotting_backend'] = 'matplotlib'
sq = UnitSquareMesh(2, 2);
plot(sq)
plt.show()

[Anders Logg (Chalmers)]

The message I get is:

RuntimeError: IOLoop is already running

[Prof Garth Wells]

A lot has changed with plotting since this was registered, so closing now and re-open if it's still an issue.