IndexError when clicking on trace in ICA.plot_overlay()

MWE:

from pathlib import Path
import matplotlib
import mne

matplotlib.use('Qt5Agg')


sample_dir = Path(mne.datasets.sample.data_path())
sample_fname = sample_dir / 'MEG' / 'sample' / 'sample_audvis_raw.fif'

raw = mne.io.read_raw_fif(sample_fname).pick_types(meg=False, eeg=True,
                                                   stim=True)

events = mne.find_events(raw, stim_channel='STI 014')
event_id = {'auditory/left': 1, 'auditory/right': 2, 'visual/left': 3,
            'visual/right': 4, 'face': 5, 'buttonpress': 32}

epochs = mne.Epochs(raw, events=events, event_id=event_id,
                    tmin=-0.2, tmax=0.5, baseline=None,
                    preload=True)

ica = mne.preprocessing.ICA(n_components=0.8, method='picard', max_iter=500)
ica.fit(epochs)

ica.plot_overlay(inst=epochs.average().apply_baseline())

https://user-images.githubusercontent.com/2046265/115895458-ba078900-a45a-11eb-95ac-9e97e86c3de3.mov

Traceback:

Traceback (most recent call last):
  File "/Users/hoechenberger/miniforge3/envs/mne/lib/python3.8/site-packages/matplotlib/cbook/__init__.py", line 270, in process
    func(*args, **kwargs)
  File "/Users/hoechenberger/Development/mne-python/mne/viz/evoked.py", line 52, in _butterfly_onpick
    lidx = np.where([
IndexError: index 0 is out of bounds for axis 0 with size 0
Traceback (most recent call last):
  File "/Users/hoechenberger/miniforge3/envs/mne/lib/python3.8/site-packages/matplotlib/cbook/__init__.py", line 270, in process
    func(*args, **kwargs)
  File "/Users/hoechenberger/Development/mne-python/mne/viz/evoked.py", line 52, in _butterfly_onpick
    lidx = np.where([
IndexError: index 0 is out of bounds for axis 0 with size 0

Start with the reproducer in the issue and inspect mne/viz/evoked.py, particularly the _butterfly_onpick callback named in the traceback. Reproduce the failure by clicking a trace in ICA.plot_overlay(); done means the click no longer raises IndexError in the reported MNE and Matplotlib setup.