When the player looks in any of the four cardinal directions (North, South, East, West), the player's hand model disappears. The tool model remains unaffected. This affects all animations that I have seen.
Sometimes when the hand disappears, the compass letters will print incorrectly, as though multiple letters are printed over each other. I suspect both bugs are related to the same root cause.
The hand bug can be seen here:Hand bug video.
Video captured in EA 106504, but I have seen it in every version that I have played so far.
It is easier to replicate when looking horizontally than when looking up or down.