Well happens to me too. With an account with more than policies the limit seems to be ignored and the link to the next is always the last policy return. So if I have loop going over the policies till next is null like in users I get stackoverflow.
Is that removed from the API?
If you are still seeing this behavior, I recommend filing a Support Case so that one of our support engineers can review your environment, how you are making your calls, and otherwise provide you further assistance.