fpppy Figure 5.23 lagging forecast values

[robjhyndman]

Discussed in https://github.com/orgs/OTexts/discussions/57

^{Originally posted by Phlos October 29, 2025}
The forecast values in fpppy Figure 5.23 appear to be lagging:

The image is correct for the corresponding fpp3 Figure 5.21:

This appears to be an error inside the statsforecast package, as you can see in the preds dataframe that first timestamp is the last quarter of 2007 (which should be the training set) instead of the first quarter of 2008:

@MMenchero