no rowKey configured, so rows are identified by object identity. This disables: {features}. Set rowKey to a field name, an array of field names, or a function.

Warnings reference › rowKey.missing

Identifier

rowKey.missing

Raised by

The grid (core)

Since

1.0.1

What happened

Without a rowKey the grid identifies a row by the object it was handed, which works only as long as that exact object stays in place. Everything that has to recognise the same row across a reload, a sort or an incoming delta is switched off; the message lists them by name.

The fix

Set rowKey to the field that identifies a row, an array of fields for a composite key, or a function returning one.

The smallest fix

createGrid(el, { rowKey: 'id' });

Reference

Covered in full at the API reference.