Python API upload fails silently if targeted project does not exist but was before

Problem

Strange and buggy behavior with Python API when uploading images.

Steps to reproduce

I use Roboflow Python API to upload batches of images to be annotated.

I wrote a script that creates Roboflow client and uploads images, here's a simplified version:

import roboflow

IMAGE_PATH = "/path/to/images"
BATCH_NAME = "batch_name"

rf = roboflow.
ws = rf.workspace("my-workspace")
project = ws.project("my-project")

project.upload(image_path=IMAGE_PATH, batch_name=BATCH_NAME)

Logs show that in connects to workspace, finds the project and says my images are uploaded.

BUT, when I check the GUI I have no images in the annotate > Unassigned panel. More, using the CLI to check with roboflow project get my-project -w my-workspace there's nothing under "project":"unannotated"

Where it is very surprising is that if I open a python terminal (sourced with the same env !) and write line-by-line the preceeding code ... IT WORKS !!! Images appear instantly in annotate > Unassigned panel !

Bonus observation: When unannotated images are deleted from the GUI, the unannotated counter in the CLI is not reset...

Expected Behavior

When running my script images should appear in the GUI like when running line-by-line python code.

Version

1.1.37

Start by reproducing the difference between the script and line-by-line use of project.upload, then inspect the Python API upload path and the roboflow project get CLI result. No source file or test is named; done means uploads from the script appear in the GUI's annotate > Unassigned panel and the CLI unannotated count is consistent after deletion.