# Description

This MR fixes running of single environments (`num_envs=1`). Previously,
in the `InteractiveScene` class, physics cloning happened when the
`replicate_physics` flag was set to True even if there was only one
environment.

Fixes [#199](https://github.com/NVIDIA-Omniverse/orbit/issues/199) and
[#203](https://github.com/NVIDIA-Omniverse/orbit/issues/203)

## Type of change

- Bug fix (non-breaking change which fixes an issue)

## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./orbit.sh --format`
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have run all the tests with `./orbit.sh --test` and they pass
- [x] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [x] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there