Bug summary

All's in the title.

Code for reproduction

frommatplotlib.pathimport*frommatplotlib.transformsimport*frommatplotlib.scaleimportLogTransformget_path_collection_extents(Affine2D().scale(2,3),    [Path([(1,2), (3,4)])], [], [(0,0)],IdentityTransform())get_path_collection_extents(blended_transform_factory(IdentityTransform(),LogTransform(10))+Affine2D().scale(2,3),    [Path([(1,2), (3,4)])], [], [(0,0)],IdentityTransform())

Actual outcome

Both expressions evaluate toBbox([[2.0, 6.0], [6.0, 12.0]]).

Expected outcome

The second expression is different.

Additional information

This probably has the same underlying cause as#7975 (implicit conversion of the non-affine transform to its affine component only). (I tried to add a warning for the deprecation in#7975 and ran into this bug.)
get_path_collection_extents is called by Collection.get_datalim; it may be possible to construct a more explicit example where the autoscaling is wrong for a suitably-constructed Collection.

Operating system

macos

Matplotlib Version

3.8.0.dev1803+gbba391d1b6

Matplotlib Backend

any

Python version

3.11.3

Jupyter version

No response

Installation

git checkout