1. In My Home, Add a task in Tasks portlet.
2. Click the task which you have created.
3. Click "Add Comment".
4. Type in some sentences like this
"Welcome to Liferay.
This is Joe Bloggs.", then post.
There will show "Welcome to Liferay. This is Joe Bloggs.". It is a problem, because if click "Enter" on your keyboard when you type some sentences in the comment, that will be changed new line after post.