x axis labeling disappears when using twinx()

Code sample, a copy-pastable example if possible

A “Minimal, Complete and Verifiable Example” will make it much easier for maintainers to help you.

import proplot as plot
import numpy as np
import xarray as xr

times = np.arange(1990, 2000)
data = xr.DataArray(np.random.rand(len(times)), dims=['time'], coords=[times])

f, ax = plot.subplots(aspect=2)
ax.plot(data.time, data)

twinax = ax.twinx()

# twinax.format(xlocator=1)
ax.format(xticks=np.arange(1990, 2000, 2))

Actual result vs. expected result

Using twinx(), the tick labeling disappears on the twin axis. This happens for datetime and normal numbers. Using xticks/xlocator on the main axis or twinax instance changes the ticks but does not produce labels.

[lukelbd]

My bad! I see now, this definitely is a major problem. I will address this before the end of the weekend. Thanks for the additional examples.

[zxdawn]

Works well. Thank Luke!