This would have to be a “YES” and “NO” answer. Depending on the type of plant you are growing, you might have plants with vigorous roots trying to approach the bag's ends. However, they would hardly burst through the bags because of the texture of the fabric. At most, they’d turn around to form a more coordinated root system to eliminate root girdling.
With the multiple drainage holes that come with fabric pots, you can expect the roots to grow healthily without interfering with the corners of the bags.  In the cases of growing trees with vigorous root systems, you might experience the root grow through the grow bags after a while. To prevent this from happening earlier, get bags with large gallon sizes.