the grid cannot be maximised because its element is not in the document.

Warnings reference › maximise.detached

Identifier

maximise.detached

Raised by

The grid (rendering)

Since

1.4.0

What happened

Maximising moves the grid's element to the document body and leaves a placeholder in its old position, and there is no old position: the element has no parent, or there is no body. The grid declines rather than moving itself somewhere it could never come back from.

The fix

Insert the grid's element into the document before maximising it.

Reference

Covered in full at the API reference.