Bug summary

Since #20426, plt.figure(constrained_layout=True).subplots(3) (or layout="constrained") shows no axes whatsoever.
attn @jklymak, I guess :)

Code for reproduction

See above.

Actual outcome

Blank figure.

Expected outcome

Not blank figure.

Additional information

No response

Operating system

fedora

Matplotlib Version

HEAD, bisects to #20426.

Matplotlib Backend

mplcairo

Python version

310

Jupyter version

No response

Installation

git checkout