The grid (core) · console.warn

edit {direction} threw; the entry was dropped.

Printed by The grid (core), prefixed [lattice], since 1.0.1.

Warnings reference › history.edit.throw

Identifier: history.edit.throw
Raised by: The grid (core)
Since: 1.0.1

What happened

History delegates an undo or redo of an edit to the edit model, and that call threw. The entry is dropped from the history rather than retried, so the stack stays consistent and that one step cannot be undone.

The fix

The error is attached to the console line.

Reference

Covered in full at the API reference.