liabru

Thanks for the example @dtgreene that does look strange. Worth trying out [0.18.0](https://github.com/liabru/matter-js/pull/1069) to see if that resolves this, otherwise I'll have to investigate.

Here is fine, thanks for raising. That's strange, I'm not seeing that message on Chrome `87.0.4280.88` (Mac) on the live [demo](https://brm.io/matter-js/demo/). Do you see it on the demo or could...

@iolyd I can't reproduce this on the official demo [here](https://brm.io/matter-js/demo/#mixed), could you share more info like hardware / OS and reproduction steps to help track this down?

Thanks for the example case, hopefully it is just an issue with them not being CCW. Do you know if `makeCCW` gives different results to your manual fix?

I've not yet had chance to look into this - did you resolve it or was it a misunderstanding? Collision start should only really fire once for each pair, until...

Yeah it should fire once, then multiple `collisionActive` then finally `collisionEnd`. Can you share your test case?

Thanks for this, will check it out.

@gokadi can you check `Matter.version` is it `0.18.0`? If so can you try out the alpha build file included this PR? https://github.com/liabru/matter-js/pull/1079 Be great to know if it resolves, here's...

Are you using the latest version of Matter and decomp? I think [Bodies.fromVertices](https://brm.io/matter-js/docs/classes/Bodies.html#method_fromVertices) should have these cases covered by the `removeCollinear` and `removeDuplicatePoints` feature but let me know if these...

Ah sorry yes I see what you mean now, thanks for clarifying. For now you should preprocess your vertices to avoid these cases, looks like I need to extend those...