Drawing object not selectable

I have created a stacked bar chart and added a number of textboxes to annotate the chart using the drawing toolbar when the chart is in edit mode. This all works great apart from the fact that when I exit edit mode there is a drawing object (a textbox) that is rendered above the chart in the top left corner. However, when I edit the chart, the object disappears, and therefore cannot be be selected so I cannot delete it. It seems that somehow it has managed to be positioned outside of the visible canvas in edit mode. How can I delete this textbox in my chart?



Anyone can help with this?

Enter edit mode (double click), select any object in the chart, and use the tab key to jump between objects. Then can use arrow keys to move it to a visible place.

Tested with LibreOffice (x86); OS: Windows 6.1.

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