removeWidget takes type GridStackElement = string | HTMLElement | GridItemHTMLElement

public removeWidget(els: GridStackElement, removeDOM = true, triggerEvent = true): GridStack {..}

And the react version is violating the above

  removeWidget: (id: string) => void;

This triggered a chain of changes and there is on concern with one of the changes,

<GridStackWidgetContext.Provider key={id} value={{ widget: { id } }} />

Note key={id} here, id is GridStackElement which it could be a HTMLElement and I don't think it is ideal to pass HTMLElement as the key.