If a multi-line block of text has its width scaled above 100%, sometimes the last line of text in a paragraph will fail to wrap correctly and extend beyond the right page boundary.

Steps to replicate:
1. Create a new document in Writer.
2. Paste in the following text: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque sodales nulla quis nulla aliquet faucibus. Phasellus et malesuada ante. Quisque fringilla pretium magna, quis aliquam felis vehicula ut. Nunc nec diam ac magna vehicula tristique iaculis sed augue. Donec blandit, mi et convallis malesuada, orci diam sodales purus, non feugiat augue mi eleifend elit. Fusce dolor nisl, convallis vel posuere adipiscing, fringilla non ipsum. Integer sit amet diam auctor tortor auctor tincidunt. Aenean massa velit, porta nec rhoncus ut, venenatis at magna. Integer blandit imperdiet fermentum. Nullam pharetra sollicitudin tincidunt.
3. Highlight the pasted text, and scale its width to 999% (Format-Character-Position-Scale width).
4. Observe how the last line of text extends past the right page boundary.

It would seem likely that this is caused by the word wrap feature miscalculating the width of the line when the text is scaled; further tests could be done to isolate the problem by testing blocks of text with different lengths and word breaks.