Night vision potion effect has a blink effect some seconds before the potion ends.
When using beacons blocks edited by worlds editors with the night vision effect, when the effect is active, it will blink forever.
It could be fixed by having an undefinite duration ( long and hidden ) as you are in the effect zone of the beacon block, then it will back to 8 seconds if you are out of any beacon effect zone for that power ( with that it will warn the player that he's out of the area ).
Linked issues
Comments 14
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
I didn't mean this report is out of hand, but I meant that this is about the 14th time I've seen reports caused by editing stuff like this.
If Mojang didn't do it, then there is a very high chance of something to work incorrectly. So, by editing the world, you kind of agreed to accept any damages to the worlds you edit.
The whole point of the NBT format was that map makers and modders could more easily customize the Minecraft experience for their players. Many features intentionally added by Notch, Jeb, Dinnerbone, etc. can only be accessed via NBT editors, and, again, are intended to be used. In this case, this bug is a simple oversight that can be fixed simply (e.g. don't do the blink effect if the effect is set to ambient, as set by beacons and other sources).
Nicholas Braden ... You're absolutely right, Mojang created unused potion properties for that, why don't they use it ... ?
I have a video of this (not in 1.4.3, though):
http://www.youtube.com/watch?v=kP1VCxBPDwY