jumpy behaviour when scrolling to older messages

[nlamah]

Describe the bug When the example app is built, and a lot of messages are added, and as a user you scroll to older messages, when you see the side scroll bar almost reaches the top the feed of the messages jump to other messages. Probably at that time a new batch of older messages is loaded and put on top of the tableView, which causes the jumpy behaviour.

To Reproduce

• Build the example app
• Typ a lot of messages
• Close the chat window
• Open the window again
• Scroll slowly to older messages, when the scroll side bar almost reaches the top of the screen pause
• Actual behaviour: The feed jumps to a different messages
• Exected behaviour: The feed does not jump, loads older messages put them on top of the list, the scroll side bar moves to a new relative position.

Video

https://github.com/parley-messaging/ios-library/assets/2762698/d59de3cb-25e2-4e4f-a236-cb16d8683e81

[alexkok]

Thanks for reporting. This improved much with 4.1.2 🚀 (Fixing #91)

There could still be a small known jump sometimes. However, the user now remains at the same place in the chat, it won't jump as much anymore like shown in the video in this issue.