Components dropped near a container's left are saved outside the container

What is the expected behaviour?

A component dropped into a container should land inside that container and stay fully visible.

What is the current behaviour?

Dropping with the cursor just inside a container's left or top edge saves the component outside the container. It renders clipped or invisible beside it. The saved position is negative (e.g. left: -31), and the position persists after reload.

How to reproduce the issue?

1. Add a Container to the canvas.
2. Take a wide component (e.g. a Dropdown) and grab it near its right end.
3. Drop it with the cursor just inside the container's left edge.
4. The component is saved outside the container instead of inside it. Same happens near the top edge when the component is grabbed near its bottom.