When doing a FP fine-tune , in Tensorboard the next round start 50 steps ahead.

### Bug description

When doing a FP fine-tune , in Tensorboard it looks like the next round start 50 steps ahead.

See image

### How to reproduce the bug

```python
Run a FP training . One epoch is good enough to see.

srun everyvoice train text-to-spec config/everyvoice-text-to-spec.yaml --config-args training.max_epochs=1

Then fine-fine that job with an extra epoch.

srun everyvoice train text-to-spec config/everyvoice-text-to-spec.yaml --config-args training.max_epochs=2 --config-args training.finetune_checkpoint="logs_and_checkpoints/FeaturePredictionExperiment/base/checkpoints/last.ckpt"
```

### Error messages and logs

No error message.

### Environment

Standard ENV , nothing special. This will be for after PR 547 is merged. ( Resume at the end of the last trained epoch #547
, Issue #534 )

### More info

none