Column '{colId}' cell.tooltip render returned a value that is not an element, a { title, rows, note } spec, a { html } wrapper or a string, so nothing was shown.

Warnings reference › tooltip-content:*

Identifier

tooltip-content:*

Raised by

The grid (rendering)

Since

1.59.0

What happened

The tooltip's render ran and returned something the tooltip cannot draw - a number, an array, a plain object with none of the recognised keys. No tooltip is shown for that cell.

The fix

Return one of the four supported shapes. The { title, rows, note } spec is the one that themes itself.

The smallest fix

cell: { tooltip: { render: (p) => ({ title: p.text, rows: [['Owner', p.row.data.owner]] }) } }

Reference

Covered in full at the API reference.