onEnter is called twice if a parameter is an array with more than one element (regression)

This is the same bug as #1414 which seems to have reappeared in the last two weeks.

Plunkr: http://embed.plnkr.co/RiVmMC8DYdqJNWhClDsN/preview

If I set `{ids: {array: false}}`, it will work but that obviously not a very satisfying solution.

Thank you for your help!
