power rail minecart bug

iF you are riding on a minecart over an activated powered rail you get kicked oFF the mincart and the mineccart starts wobbleing. iF you try to get back on you get kicked oF again. it is verry annoying For me because it means i cant ride a minecart on rails on a Flat surFace, and i ride minecarts a lot. i would be very happy iF you Fix this. thank you!