Elytra Issue: SuperMan Pose in Minecraft

This most-likely affects all versions (have not yet checked) but if you start gliding with an Elytra and enter a Minecart, it'll give you the superman pose. However, once the Minecart goes up, you go back to normal.

Here is a video ->https://www.youtube.com/watch?v=-MydVO8GTIA

Go to around 35 seconds