This is visible in 4-columns layout, especially on the outer columns that are a bit more narrow than the center ones.
Use the Pick a Number portlet, it is a significant example. Move it to the very left or very right in 4-cols layout and notice the text wraps about along the left of the buttons bar (see attached PickANumber)
Another example of that behavior can be observed with the User Registration portlet. I see it in IE (on Windows) and in Firefox/Namoroka on Archlinux, not on Windows. See attached (UserRegsitration).
An opposite behavior is when the text does not wrap at all. On the outer columns it might be impossible to read it all. This behavior I think is not tied to the layout, but when it is combined with B1 above, it becomes more obvious. This occurs on any browser I could test. See RoleSecurity attached.