[Vanilla Bug] Arcing voxel projectiles flip facing right before impact

[Crimsonum]

First Check

• [X] I added a very descriptive title to this issue.
• [X] I used the GitHub search to find a similar issue and didn't find it.
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Description

Projectile types that use a voxel image and ballistic trajectory (Arcing=yes) have a glitch where the projectile flips to facing east right before detonating.

Required Code (optional)

The vanilla game has no arcing voxel projectiles. To reproduce the bug, change the image of some existing ballistic projectile to a voxel one, for example:

[Ballistic]
Image=ICBM

Steps To Reproduce

1. Fire the ballistic weapon
2. Observe as the projectile approaches the target

Expected Behaviour

The projectile should keep facing the arc, and disappear right when detonating.

Actual Behaviour

The projectile flips to facing east right before detonating.

Additional Context

In this example, the Hover MLRS has been modified to fire two arcing rockets, which use the ICBM voxel image to make the bug more apparent.