### Invalid `BalloonPanelView` positioning [#126](https://github.com/ckeditor/ckeditor5-ui-default/issues/126)

### Pre–requirements

1. Click "**Scroll to the squares**" button.
1. There should be 4 red squares displayed in this test.

### Test

1. Click "**Attach the panels**" button.
1. There should be 4 balloon panels displayed in this test.
1. Each balloon panel should be **perfectly** attached to a square.
1. Each balloon panel's triangle should hit directly into the spot (square).
