Document additional dependency and architectural issues

- Add warning about dependency version conflicts
- Document environment wrapper interface inconsistencies
- Note missing git dependency for playground package
- Acknowledge that additional runtime issues may persist due to architectural problems

README.md

@@ -120,7 +120,15 @@ All experiments automatically log to wandb with your configured credentials. Res
 - **Root cause**: BraxGymnaxWrapper.reset() method doesn't handle batched keys from vmapped initialization
 - **Fix applied**: Modified reset() method to detect and properly handle both single and batched keys using `jax.vmap`
 
-**Summary**: Fixed 6 critical bugs that prevented the original repository from running at all. The algorithm now works end-to-end with proper wandb integration.
+**7. Environment Wrapper Interface Inconsistencies** 
+- **Issue**: Multiple environment wrappers with incompatible return signatures causing unpacking errors
+- **Root cause**: BraxGymnaxWrapper, NormalizeVec, and other wrappers expect different return formats
+- **Additional issue**: Missing git dependency for `playground` package (line 23 references "playground" but line 130 specifies git source)
+- **Status**: Partially fixed - dependency version mismatches and architectural inconsistencies may cause additional runtime issues
+
+**⚠️ Note**: The repository may have additional dependency version conflicts and architectural issues that could cause runtime failures. The codebase appears to have been developed with non-fixed dependency versions that may have broken compatibility over time.
+
+**Summary**: Fixed 6+ critical bugs, but the repository's architectural design and dependency management suggest additional issues may persist.
 
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