Not targetting enemy anymore

[Gilderoy]

Hi, i'm levelling a warrior now, everything went just fine till level 20.
He see a mob, target him, charge him, kill him.
Not at level 20 he stopped target and charge and just follow mob around.
If the mob is hostile soon or later he get attacked and respond to the attack but if the mob is neutral then he just keep following him spaming the log with

[18:05:06:992] Activity: Moving towards Elder Mountain Boar
[18:05:07:143] NeedToMoveToTarget?
[18:05:07:165] Do NeedToMoveToTarget
[18:05:07:173] move to the target started
[18:05:07:202] Activity: Moving towards Elder Mountain Boar
[18:05:07:385] NeedToMoveToTarget?
[18:05:07:452] Do NeedToMoveToTarget
[18:05:07:474] move to the target started

Full log attached, HB vrsion 1.9.5.8