Can you expand a bit, I am not sure what I am supposed to be seeing in that notebook

I am going to push this to 1.4.x (first bug fix release after 1.4.0) so we don't lose it, but this has sat for 7 months so it does not seem to be urgent.

For a self contained example:

import matplotlib
import matplotlib.pyplot as plt
from datetime import datetime, timedelta

matplotlib.rc('text', usetex=True)

t0 = datetime.now()
ts = [t0 + i * timedelta(days=1) for i in range(10)]
fig, ax = plt.subplots()
ax.plot(ts, range(10))
plt.show()

It looks like this is still present.

Thanks for the self-contained example. But, seems to work for me. Like sure, it looks bad...

I think the OP is aiming at the different fonts being used for the x- and y-ticklabels.

Yeah, it kind of works, but those '2's don't look the same to me