A rather simple and unimportant bug, but still worth mentioning.
Direct Connect remembers the last IP used when Minecraft is restarted, but doesn't remember the port.
MC-14359
Direct Connect does not remember port
Resolved
Fixed
1
Confirmed
Minecraft 1.5.1, Minecraft 1.5.2, Snapshot 13w19a, Snapshot 13w21a, Snapshot 13w21b, Snapshot 13w26a, Minecraft 1.6
Minecraft 1.6.2
Retrieved
Confirmed in 13w21b.