Server crash when peforming playbill "A Task Complete"

Version: v692916

Server Type: Offline/Single Player

Occurence: 2/2

Step to Reproduce:

1. The player wears the Elytra, mannequins for others.

2. The perform goes well before the stab movement (Image 1).

3. When Elytra stabs Artificer, after he says "So... a lifetime of loyalty is rewarded with a blade in my carapace...", the whole world animation freezes (Image 2).

4. Then you are disconnected from the server.

Other Information:

• I have two beefalos, one bound with a shadow beef bell, hitched at base. Another bound with a normal beef bell, placed on the ground just near the stage.
• Server log complains nil about something called "rider" (Image 3).
• Client log says nothing special (Image 4).