I face the same problem as VS Code "Run selection/line in Python interactive window" not working at all, yet using Bisect to disable and detect the reasons through extensions didn't help. For me the problem started after VScode itself was updated yesterday.
VS Code version: 1.75.1 Python version: 3.9.13 Python VS Code extension: 2023.2.0
This command "Shift + Enter" just stopped working in full all of a sudden. It runs for a single line selected, but not for multiple. I cannot find why.
It is just time consuming to copy and paste the same code in the interactive code to run it. Any ideas how I can fix it?