<p>OK, I finally figured it out. This bug is known as "<strong>Boomerang Effect</strong>".</p>

<p>Reason: Bezier will cause After Effects randomly mass up the path of the shape. </p>

<p><a href="https://i.sstatic.net/BVEwX.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/BVEwX.png" alt="enter image description here"></a></p>

<p>So you can simply right click the keyframe than select "Keyframe Interpolation" from the menu, than set "Spatial Interpolation" to "Linear" instead of "Auto Bezier", it'll fix everything!</p>

<p>These two video tutorial helped me a lot: <a href="https://podcasts.creativecow.net/after-effects-tutorials-podcast/ae-boomerang-effect-part-1" rel="nofollow noreferrer">AE Boomerang Effect, Part 1</a> and <a href="https://podcasts.creativecow.net/after-effects-tutorials-podcast/ae-boomerang-effect-part-2" rel="nofollow noreferrer">AE Boomerang Effect, Part 2</a> they explain the principle of this problem.</p>

CC BY-SA 3.0
2015-09-15T12:46:21.537Z
2015-09-15T12:46:21.537Z
Amyas Marshall
<p><a href="https://i.sstatic.net/gYj5I.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/gYj5I.png" alt="ae problem"></a></p>

<p>As you can see in the Value Graphic, the second part of the line is a broken line, but I didn't make it that way, and I can't fix that.</p>

<p>That causes the shape to continue moving forward a little bit instead of going back immediately.</p>

<p>I didn't set easy ease or staff like that. It happens every time, but I don't know what is controlling this!</p>

<p>Help!</p>

<after-effects><animation>
After Effects added an extra move to the animation, how to get rid of it?
Amyas Marshall
# After Effects added an extra move to the animation, how to get rid of it?

(Asked by: username_0 on 2015-09-15)

[![ae problem](https://i.sstatic.net/gYj5I.png)](https://i.sstatic.net/gYj5I.png)

As you can see in the Value Graphic, the second part of the line is a broken line, but I didn't make it that way, and I can't fix that.

That causes the shape to continue moving forward a little bit instead of going back immediately.

I didn't set easy ease or staff like that. It happens every time, but I don't know what is controlling this!

Help!

**Tags:** after-effects, animation


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## 1 answers

### Answer by username_0 on 2015-09-15. Score: 3 | Accepted answer

OK, I finally figured it out. This bug is known as "**Boomerang Effect**".

Reason: Bezier will cause After Effects randomly mass up the path of the shape.

[![enter image description here](https://i.sstatic.net/BVEwX.png)](https://i.sstatic.net/BVEwX.png)

So you can simply right click the keyframe than select "Keyframe Interpolation" from the menu, than set "Spatial Interpolation" to "Linear" instead of "Auto Bezier", it'll fix everything!

These two video tutorial helped me a lot: [AE Boomerang Effect, Part 1](https://podcasts.creativecow.net/after-effects-tutorials-podcast/ae-boomerang-effect-part-1) and [AE Boomerang Effect, Part 2](https://podcasts.creativecow.net/after-effects-tutorials-podcast/ae-boomerang-effect-part-2) they explain the principle of this problem.


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