end-of-animation wiggle?

My animations are very simple...left-right/right-left and up/down, etc.

**I should say, Motion Paths, to be specific

When I preview my work, sometimes there's a little wiggle right at the very end of that object's duration on the time line.

200% zoom reveals nothing in the animation path to explain this motion.

Is there a way to fix this?

Thank you

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