I was testing some command block mechanics which included giving the player a slowness effect. After a few tests I decided to record it but then the slowness effect didn't slow me down at all. At first I thought there is a command that clears the effect but there isn't!
The time of the effect was counting down as usual, so it wasn't cleared and I didn't have a speed effect.
Still I was moving with default speed and the FOV didn't change even though I had slowness 5 (/effect @a slowness 5 4 true)
After rejoining the map, without closing Minecraft, the problem was gone.
I'm sorry that I can't give any more information about it but maybe it helps finding the issue.
Related issues
Comments
migrated
migrated
No, I didn't teleport to unloaded chunks
migrated
This bug also appeared in 1.9.4 and the speed effect seems to be affected, too.
wobst.michael
Is this still an issue in the most recent versions (currently that is 1.10.2, or 16w43a) of Minecraft? If so, please update the affected versions and help us keeping this ticket updated from time to time. If you are the owner/reporter of this ticket, you can modify the affected version(s) yourself.
migrated
So far I can't tell if 1.10 and 1.11 snapshots are affected, because I still haven't found a reliable methode to reproduce it.
migrated
Your symptons do show that you did teleport to unloaded chunks, that causes a number of issues, including speed/slowness not working.
migrated
If you can't reproduce it again, without teleporting, please say so, then this'll be marked as duplicate instead.
migrated
Alright, I could only reproduce it by teleporting to unloaded chunks in the newest snapshot.
Have you been teleporting to unloaded chunks?