Bug summary

If I rotate an image, the background of its bounding box is rendered black when rendering as .pdf or .png

Code for reproduction

importmatplotlib.pyplotaspltfrommatplotlib.transformsimportAffine2Dimportnumpyasnpimg=np.random.random((100,20,3))tr_rotate=Affine2D().rotate_deg_around(0/2,0/2,45)tr_translate=Affine2D().translate(250,250)fig,ax=plt.subplots()ax.imshow(img,transform=tr_rotate+ax.transData,clip_on=False,)ax.imshow(img,transform=tr_translate+ax.transData,clip_on=False,)ax.set_xlim(-250,500)ax.set_ylim(-250,500)fig.savefig("MWE.png")

Actual outcome

Expected outcome

Transparent Bounding Box

Additional information

In the past this was possible, however I don't know which version of matplotlib was used...

Operating system

KDE Neon

Matplotlib Version

3.9.2

Matplotlib Backend

tkagg

Python version

3.12.3

Jupyter version

No response

Installation

pip