As a general note, things like these need to be tested. MCU documentation errors are very typical so that the hardware doesn't match the documentation. People on the forums are sometimes right from their own experience, but sometimes just read the same documentation you already are reading to write their reply. Even those experienced may remember it wrong. So when encountered with a question like this, spend the minute or two to test it, and remember to document the behavior as a code comment.
Actual testing may also reveal totally unexpected behavior that's neither of the expected outcomes. For example, on AVR, a certain PWM timer mode (forgot which) gives very short pulses (skipping the prescaler!) when set to output "0", which is highly unexpected IMHO.