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[Bug] SFTTrainer ignores bf16=False setting, causes error on T4 GPUs and Colab notebooks #3956

@abrar360

Description

@abrar360
  1. Did you update? pip install --upgrade unsloth unsloth_zoo
  2. Colab or Kaggle or local / cloud Colab
  3. Number GPUs used, use nvidia-smi1
  4. Which notebook? Please link! this notebook
  5. Which Unsloth version, TRL version, transformers version, PyTorch version? Unsloth 2026.1.4
  6. Which trainer? SFTTrainer, GRPOTrainer etc SFTTrainer

To Reproduce:
Just try to run this notebook

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