dhtmlx-compat does not translate the {kind} key '{key}', so it has no effect. Nothing was applied for it.

Warnings reference › dhtmlx.*.dropped:*

Identifier

dhtmlx.*.dropped:*

Raised by

dhtmlx-compat

Since

1.14.0

What happened

A configuration or column key from your dhtmlx grid has no counterpart in the compatibility shim, so it was dropped. {kind} is config or column, and {key} is the key as you wrote it. A migration that silently ignores half of a column definition is the failure this line exists to prevent: the shim translates what it knows and names everything it does not, once per key rather than once per column.

The fix

Look the key up in the dhtmlx compatibility section of the reference. Where Lattice has an equivalent it is spelled differently and belongs in the native configuration; where it has none, remove the key so the intent is not lost in your source.

Reference

Covered in full at the API reference.