This can be avoided in two ways:
1. Convert the outputText component to inputText and make the read only property as true.
Set the 'rows' property of inputText to more than 1 (depending on the text you have)
If we have set the rows to 3 and text is much longer, scroll bar would appear.
2. By setting inline style for the outputText, we can achieve the desired.
inlineStyle="white-space: pre-wrap; word-wrap:break-word; display:inline-block;"
noWrap="true"
styleClass="AFStretchWidth"
Either of the methods avoid text wrap issues in ADF tables.