THIS IS NOT A DUPLICATE! PLEASE READ THE DESCRIPTION CAREFULLY.
When executing the following command:/effect @p saturation 1
You receive this message:Given (player) saturation for 1 second(s).
However, you only receive 1 tick of saturation. This is intended, but the message should say that you recieved 1 tick of saturation, instead of 1 second of saturation.
Related issues
Comments

There is only one response message for all the effects. Since MC-19648 doesn't get fixed, this one won't get fixed either.