W&B: Step count is doubled

[AyushExel]

W&B plots step count is double what it's supposed to be. Multiple users have reported this on wandb github.
@glenn-jocher I think this has something to do with the revamp of new logger API. I'll investigate and fix it this week. I'm raising this issue so we don't forget.

🐛 Bug

A clear and concise description of what the bug is.

To Reproduce (REQUIRED)

run python train.py with wandb installed

Expected behavior

The number of steps of panels should be equal to epochs

[github-actions]

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[glenn-jocher]

@AyushExel thanks for spotting this! I tested W&B logging in the initial loggers refactor PR #4137 and made sure the steps were equal to the epochs, but have not tested since then, so I think if you do a diff from that commit to master the issue should in the diff.

[glenn-jocher]

@AyushExel just trained notebook with master for 10 epochs and everything logs correctly:
https://wandb.ai/glenn-jocher/YOLOv5/runs/i0eat7vt?workspace=user-glenn-jocher

[AyushExel]

@glenn-jocher awesome. Thanks, I'll close this issue

[glenn-jocher]

@AyushExel ok! I've got 8 models training currently and epochs log correctly as far as I can tell, so this might be a false alarm.

[AyushExel]

@glenn-jocher Great! that's good to know