Grinderbot blacklist issue

I have a bug with the bot blacklisting 90% of the mobs when its not needed. he eithers walks just past them or flys over them.

I would like to point out that the mob he blacklist are reachable, within view and often even within 2-3 yards

[N] 01:51:57 - Path Count: 6

01:51:57 - Can't reach Shao-Tien Soul-Caller, blacklisting it.

01:51:58 - Player Attack Shao-Tien Dominator (lvl 90)

[N] 01:51:58 - Path Count: 6

01:51:58 - Can't reach Shao-Tien Dominator, blacklisting it.

01:52:02 - Player Attack Mogu Statue (lvl 90)

[N] 01:52:03 - Path Count: 2

01:52:03 - Can't reach Mogu Statue, blacklisting it.

01:52:03 - Player Attack Shao-Tien Dominator (lvl 90)

[F] 01:52:03 - Cast Sprint (Sprint)

[N] 01:52:03 - Path Count: 2

01:52:03 - Can't reach Shao-Tien Dominator, blacklisting it.

01:52:03 - Player Attack Shao-Tien Soul-Caller (lvl 90)

[N] 01:52:03 - Path Count: 2

01:52:03 - Can't reach Shao-Tien Soul-Caller, blacklisting it.

01:52:08 - Player Attack Manifestation of Pride (lvl 90)

[N] 01:52:08 - Path Count: 5