I happened to trip into this bug, I don't know if it's been reported yet. While running through cougars, I happened to use scream havoc on one while it was at missile range. It instantly was at melee after I used it. It is easily repeatable as I went back to try it again to get a log for this. Here is an unedited log:

[Woodland Path, Dense Forest]
A well-worn dirt path that travels eastward through the forest ends abruptly at this point. Towering trees spread out in all directions, standing silent and watchful like arboreal sentinels. Brambles and knotsweed cover the heavily shaded forest floor. You catch a glimpse of an ancient, crumbling tower through a break in the trees. You also see a cougar.
Obvious paths: north, east, south, southwest, west, northwest.
>
Appearing to have lost sight of its target, a cougar stops advancing.
>
You've gained a new rank in your overall defensive maneuvering.
>asses
You assess your combat situation...

You appear to be having difficulty targeting melee and ranged attacks.
>
The cougar begins to advance on you!
The cougar is still a distance away from you and is closing steadily.
>asses
>
You assess your combat situation...

You (solidly balanced) are facing a cougar (1) at missile range.
A cougar (1: solidly balanced) is advancing on you at missile range.
You appear to be having difficulty targeting melee and ranged attacks.
>scream havoc
Opening yourself as the conduit to the rage of every innocent slain at the hands of the wicked before their time, you channel their fury into a single, prolonged shout directed at a cougar. A wave of sound lands a good hit on a cougar, driving it back a short distance.
Unable to keep its balance, a cougar tumbles to the the ground!
Roundtime: 2 sec.
[You're bruised, solidly balanced and in dominating position.]
>
You feel fully attuned to the mana streams again.
>asses
You assess your combat situation...

You (solidly balanced) are facing a cougar (1) at melee range.
A cougar (1: prone and very badly balanced) is facing you at melee range.
You appear to be having difficulty targeting melee and ranged attacks.
>
The cougar leaps to its feet.
>
* With strength, a cougar swipes with deadly claws extended at you. You badly fail to parry with an iron-banded parry stick with brown leather straps. The claw lands a light hit to your left arm.
[You're bruised, solidly balanced and in excellent position.]
>ret
You retreat back to pole range.
>ret
You retreat from combat.
>e