If you've scrolled up a conversation to load one or more older message pages, when you put the app in the background and put it back to the foreground, the previously loaded pages will be unloaded, thus sending you back to the bottom of the conversation.
It shouldn't, because if you were seeing previous messages it was probably to gather some information, that you'd then need to scroll back up to after the pages were unloaded.
The app should remember your position in the conversation when its put in the background
If you've scrolled up a conversation to load one or more older message pages, when you put the app in the background and put it back to the foreground, the previously loaded pages will be unloaded, thus sending you back to the bottom of the conversation.
It shouldn't, because if you were seeing previous messages it was probably to gather some information, that you'd then need to scroll back up to after the pages were unloaded.
The app should remember your position in the conversation when its put in the background