I have created a number of roller coasters in my world and worked fine up until the 1.17 update and this is where the mine cart doesn't stay on the rail and it then proceeds to clip through the track and the block the track is placed on there is images attached to show this in three different instances but there will be two different images on the different attractions/rail systems. This issue mainly occurs on inclines and declines of the rails and it clips through the block it should really be on. and i honestly hope this gets resolved soon. There is also instances of the person in the mine cart starting to clip out of it and also the person in the mine cart floating out of it and this is just an overall visual glitch and it isn't very good that this is occurring and it doesn't look very good for spectators and other people who may want to just look at it and it is almost starting to ruin my experience and this is only occurring to people that aren't in the mine cart that is mean to be on the track Below you will find 4 videos and three photos of this instance happening and these show what is happening with this problem.

I really hope this gets fixed soon to be honest it will be really disappointing if it doesn't