This one fully bugged out and failed, despite no obstacles.
15:14:56.745 - [Fight] Player Attack Vile Familiar (lvl 4)
[N] 15:14:56.870 - [Path-Finding] FindPath from -164.5388 ; -4401.474 ; 75.73822 ; "None" to -211.5448 ; -4446.072 ; 67.16218 ; "None" (Kalimdor)
[N] 15:14:56.939 - [Path-Finding] Path Count: 13 (84.20556y, 68ms, smoothed)
[N] 15:15:04.433 - [MovementManager] Think we are stuck
[N] 15:15:04.433 - [MovementManager] Trying something funny, hang on
[N] 15:15:05.477 - [MovementManager] Think we are stuck
[N] 15:15:05.477 - [MovementManager] Trying something funny, hang on
[N] 15:15:06.521 - [MovementManager] Report navmesh poly to avoid it
[D] 15:15:06.521 - [MovementManager] Current pos: -201.0316 ; -4411.02 ; 67.65794 ; "None" - Target pos: -211.2587 ; -4445.114 ; 67.16461 ; "None" Continent: Kalimdor Tile: 40.27066_32.37693
[N] 15:15:06.522 - [MovementManager] Waypoint timed out
[N] 15:15:06.552 - [MovementManager] Report navmesh poly to avoid it
[N] 15:15:06.553 - [Path-Finding] FindPath from -201.0316 ; -4411.02 ; 67.65794 ; "None" to -211.5448 ; -4446.072 ; 67.16218 ; "None" (Kalimdor)
[N] 15:15:06.613 - [Path-Finding] Path Count: 9 (66.40439y, 59ms, smoothed)
[N] 15:15:22.897 - [MovementManager] Think we are stuck
[N] 15:15:22.897 - [MovementManager] Trying something funny, hang on
[N] 15:15:23.930 - [MovementManager] Think we are stuck
[N] 15:15:23.930 - [MovementManager] Trying something funny, hang on
[N] 15:15:24.971 - [MovementManager] Report navmesh poly to avoid it
[D] 15:15:24.971 - [MovementManager] Current pos: -213.4031 ; -4420.22 ; 64.04691 ; "None" - Target pos: -211.3215 ; -4450.927 ; 69.47865 ; "None" Continent: Kalimdor Tile: 40.28791_32.40013
[N] 15:15:24.971 - [MovementManager] Waypoint timed out
[N] 15:15:26.033 - [MovementManager] Think we are stuck
[N] 15:15:26.033 - [MovementManager] Trying something funny, hang on
[N] 15:15:27.073 - [MovementManager] Think we are stuck
[N] 15:15:27.073 - [MovementManager] Trying something funny, hang on
[N] 15:15:28.112 - [MovementManager] Report navmesh poly to avoid it
[D] 15:15:28.112 - [MovementManager] Current pos: -213.4031 ; -4420.22 ; 64.04691 ; "None" - Target pos: -211.3834 ; -4451.298 ; 69.66508 ; "None" Continent: Kalimdor Tile: 40.28791_32.40013
[N] 15:15:28.112 - [MovementManager] Waypoint timed out
[N] 15:15:35.949 - [MovementManager] Think we are stuck
[N] 15:15:35.949 - [MovementManager] Trying something funny, hang on
[N] 15:15:36.992 - [MovementManager] Think we are stuck
[N] 15:15:36.992 - [MovementManager] Trying something funny, hang on
[D] 15:15:37.314 - [Fight] Mob seem bugged
15:15:37.639 - [Fight] Can't reach Vile Familiar, blacklisting it.
[N] 15:15:38.037 - [MovementManager] Report navmesh poly to avoid it
[D] 15:15:38.037 - [MovementManager] Current pos: -213.4031 ; -4420.22 ; 64.04691 ; "None" - Target pos: -210.425 ; -4449.846 ; 69.02354 ; "None" Continent: Kalimdor Tile: 40.28791_32.40013
[N] 15:15:38.037 - [MovementManager] Waypoint timed out
15:15:38.222 - [Fight] Player Attack Vile Familiar (lvl 3)