When you teleport to coordinates that are to large (> 2,999,999) you get:
Format error: The number you have entered (%.2f) is too big, it must be at most %.2f
In 1.3, the %.2f's showed 30,000,000 as the max.
Environment
Mac OS X java 7
MC-507
Teleporting to Large Numbers Creates a Broken Error
Resolved
Fixed
0
(Unassigned)
Confirmed
teleport
Minecraft 1.4.2, Minecraft 1.4.6, Minecraft 1.4.7, Snapshot 13w02a, Snapshot 13w02b, Minecraft 1.5, Snapshot 13w11a, Minecraft 1.5.1, Snapshot 13w17a
Snapshot 13w21a
Retrieved
Another issue is if you tp to a really high y coordinate you'll get kicked for "Illegal Stance" and be unable to enter the world again. Previously it was limited to 265.