Expected behavior
If someone in a chat reacts to a message that has already been read by the recipient and is outside the current chat area, the user can jump to that reaction by clicking/tapping on a floating button.
Actual behavior
It is not yet possible to jump to a reaction
Explanation
Especially in groups, it happens quite often that someone reacts to an older message that is no longer in the current chat area. Identifying the relevant message using the preview from the chat list is not always easy. The user often has to scroll through the chat to find it. Therefore, I think it would be good if, in such a case, you could jump directly to that reaction using a floating button.