Google "raspberry pi as wired router" and take your pick.
There you go. Convinced?The Pi 3 seems like quite the upgrade from the 2. It has a 1.2GHz processor, faster RAM, Bluetooth and WiFi on board.
The operative words being "should not", and you'd be right. However I have seen it happen due to default configuration files when used "automagically", hence I mentioned it.A Wi-Fi Access Point should not create its own subnet.