Bug summary

Having just picked up v3.9.1, we are seeing downstream image test failures due to additional whitespace incontourf andpcolor plots that use datetimes. The change bisects to#28393.

Code for reproduction

importdatetimeimportnumpyasnpimportmatplotlib.pyplotaspltdts= [datetime.datetime(2009,9,9,17,0)+datetime.timedelta(minutes=n)forninrange(10,61,10)]foo=range(5)data=np.arange(30).reshape(6,5)plt.contourf(foo,dts,data)plt.show()

Actual outcome

Expected outcome

Before#28393 I get

Additional information

No response

Operating system

Ubuntu

Matplotlib Version

v3.9.1 andmain

Matplotlib Backend

No response

Python version

3.12

Jupyter version

No response

Installation

conda