[BUG]: filled area plots having trouble showing trace in correct position after hiding/showing traces

[maon-fp]

Description

Filled area plots do not place trace in correct position after showing exclusively single trace and resetting plot to show all traces.

Screenshots/Video

Steps to reproduce

• Go to https://plotly.com/javascript/filled-area-plots/#stacked-area-chart
• Double-click "trace 1" to show "trace 1" only
• Click "trace 1" again
• Now plot is empty
• Double click any trace to show all traces again

Notes

Seems like "trace 1" is still plotted but without the necessary y-offset so it's hidden behind "trace 0"