<!--To help us understand and resolve your issue, please fill out the form to the best of your ability.-->
<!--You can feel free to delete the sections that do not apply.-->

### Bug report

**Bug summary**

<!--A short 1-2 sentences that succinctly describes the bug-->

**Code for reproduction**

<!--A minimum code snippet required to reproduce the bug.
Please make sure to minimize the number of dependencies required, and provide
any necessary plotted data.
Avoid using threads, as Matplotlib is (explicitly) not thread-safe.-->

```python
# Paste your code here
#
#
```

**Actual outcome**

<!--The output produced by the above code, which may be a screenshot, console output, etc.-->

```
# If applicable, paste the console output here
#
#
```

**Expected outcome**

<!--A description of the expected outcome from the code snippet-->
<!--If this used to work in an earlier version of Matplotlib, please note the version it used to work on-->

**Matplotlib version**
<!--Please specify your platform and versions of the relevant libraries you are using:-->
  * Operating system:
  * Matplotlib version: 
  * Matplotlib backend (`print(matplotlib.get_backend())`):
  * Python version:
  * Jupyter version (if applicable):
  * Other libraries: 

<!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda-->
<!--If you installed from conda, please specify which channel you used if not the default-->

