# Description

This MR does the following:
* Removes the default value for argument `camel_case` in the USD setter
functions. This was causing confusion when reading code.
* Fixed the UI behavior that material was getting selected on spawning
* Fixed the unit tests under `sim`

## 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
- [x] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file