Reactions

A common problem in messaging interfaces is how to handle reactions to messages. Displaying reactions can increase the size of the message element, which can displace the rest of the messages in the list, canceling the automatic scroll behavior when new messages come in. To address this, the items-change scroll modifier allows you to keep the list at the bottom in case it is there and the change of the data causes a size increase.

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The approach above is not exclusive to reactions - the same principle should be applied to any message state change that will change the message height (for example, expanding details, etc).

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