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I have the folowing problem:

I have two mutableLists ( offerDisplay and drawStack), both lists contains the same type of objects. First there is no exception when i want the size of drawstack, then i remove a a object out of offerDisplay. After that, when i again try to get the size of drwaStack, i get the ConcurrentModificationException. Getting the size of offerDisplay is after the remove is not a Problem. The two lists are in an object, in the order "val offerDisplay..., val drawStack".

Is it possible that maybe offerDisplay overwrites something at drawSack or anything else?

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Joker26_37
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    Welcome to StackOverflow. Please read [How do I ask a good question](https://stackoverflow.com/help/how-to-ask), in particular: do not post pictures of your code, and provide a minimal reproducible example. Having said that, can you post a little more context? `ConcurrentModificationException` can be thrown if you try to update a collection while you're looping over it – user2340612 Jul 02 '23 at 09:33

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