GetPrint request of Atlas Template doesn't respect Project scales

[enricofer]

What is the bug or the crash?

It appears that the GetPrint Request on QGIS server of Atlas Layout doesn't return the same result of a QGIS desktop print.
the setting the scale of a map item with "controlled by atlas/predefined scale (best fit)" doesn't work and the applied scale is the same of "fixed scale" option.

Steps to reproduce the issue

Put the attached dataset and project on a path accessible by qgis server and make a GetPrint request on TEST_ps template:
http://[path_to_server]?MAP=[path_to_test_dataset]/test_atlas.qgs&SERVICE=WMS&REQUEST=GetPrint&TEMPLATE=TEST_ps&ATLAS_PK=*&FORMAT=pdf&CRS=EPSG:32632&DPI=100
the resulting pdf will have all map frames at the same wrong fixed scale.

instead, the following request on template TEST_sf:
http://[path_to_server]?MAP=[path_to_test_dataset]/test_atlas.qgs&SERVICE=WMS&REQUEST=GetPrint&TEMPLATE=TEST_sf&ATLAS_PK=*&FORMAT=pdf&CRS=EPSG:32632&DPI=100
will return a pdf with a correct representation, the same of the desktop print
test_project_and_dataset.zip
.

Versions

tested on dockerized QGIS server 3.22 instance:
image: 3liz/qgis-map-server:3.22

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response

[nicogodet]

Are you using https://github.com/3liz/qgis-atlasprint ?

[enricofer]

Maybe in the docker image is installed, but I verified the behaviour even on a standalone version without plugins