/effect works as following:
/effect <player> <effect> [seconds] [amplifier] [hideParticles]
In the latest snapshot, the 'seconds' parameter isn't handled as seconds, but as game-ticks.
How to reproduce:
/effect @p minecraft:speed 100 1 true
What I expected to happen:
It would give me Swiftness II for 100 seconds.
What actually happened:
It gave me Swiftness II for 5 seconds.
Why? In 1 second, there are 20 game-ticks. 100/20 = 5 seconds, meaning that it handles the 'second' parameter as game-ticks, and not as seconds.
Related issues
Comments


Yeah, it happened with saturation.. Thought it was a bug since the snapshot. Just as a random example I used speed, should've been more precise 🙂 thx for clearing that up
Speed still gives me 100 seconds. Are you talking about MC-19648?