# Description

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The "object" obs group in the Franka stacking environment contains the
absolute position of each of the cubes. At the moment they are being
returned as world positions which include the env offset if running
multiple envs in parallel, causing inconsistent position values.

Fixes:

Eliminates the environment offset from the cube positions in the
"object" obs group of the Franka stacking environment by subtracting out
the environment origin.

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## Type of change

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

## Screenshots

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## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] 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
- [x] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

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