falling/dislocating when dismounting minecart in Nether

Hello,

Every time I dismount a mine cart in the Nether (pressing Shift), I fall down into lava. I suspect the bug causes the character to be misplaced a few blocks away and, if on a tunnel above lava, causes the character to fall below the tunnel. 

Thank you for looking into this.

 

Best wishes,

 

Nic