I'm not sure if "sticking edges" is the correct term, But how do I prevent
my character from doing this problem:
Setup: box is just a solid.
character has default platform behavior, scrollto and boundtolayout: edge
TrapInc
Try checking your collision polygons for both the character and box. If they have an odd shape, they might be catching. Just double click on the sprite and select the polygon icon in the editor. If the character is animated, check the collision polygons for each frame too.
I've tried that on the character and box or objects. I even resized both still sticking.
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Upload your capx.
https://www.dropbox.com/s/p7oz56rwatmcozp/android.capx
Your problem was from the collision polygon , Check it now :