Unexpected Additional Row of Spans at Bottom with Extra Column Appearance

[Gyanbu]

I've noticed a display issue where Ratzilla renders an extra row of spans at the bottom of the visualization, and each row appears to have one additional span compared to what I would expect. This creates the visual effect of an extra column on the right side of the visualization.

Current Behavior:

The visualization shows N+1 rows where N seems to be the intended number

Each row contains M+1 spans where M seems correct for that row

This creates a diagonal "extra column" effect on the right side

Expected Behavior:

Number of rows should match the intended visualization structure

Each row should contain exactly the number of spans appropriate for that row

No extra column effect should appear

Additional Context:

Highlighted extra row on the bottom

[junkdog]

Which backend is this using (I'm guessing DomBackend, but not sure)? If you have a minimal reproduction it'd help with the diagnosis.

[orhun]

Yup, further info needed