Mob missing attack animation for throwing javelins

[DrudgeRobber]

Bug Report or Feature Request (mark with an x)

- [x] bug report -> please search issues before submitting
- [ ] feature request

Edit: I think this actually has to do with the mob having both a throwing weapon and a shield.

Se Sclavus attack you with javelins but seem to lack the animation. You can see the javelin being thrown through the air and a new one appearing in their hand, but no attack animation is shown. Included short video.
missingjavelinanimation.zip

Repro steps.

Find a Se Sclavus (I found them in the swamp near yanshi) that throws javelins and get in attack range.

The log given by the failure.

Desired functionality.

Mention any other details that might be useful.

[DrudgeRobber]

I edited this because I encountered an undead throwing javelins just fine almost immediately after posting.