Decoration Mapping Through Custom Replace Step Behavior

[shinTSY]

Hi Margin, thanks for your quickly reply.

Here is the link could reproduce this issure.

Link: ecstatic-ride-lg0gd8 - CodeSandbox

Reproduce steps:

1. Select second column like the image show.
2. Press ‘Delete’ key.
3. You will see some widgetDeco disappeared(mapped wrong).

Before:

After: