Add a button to scroll all the way to first new message
When rejoining a conversation after many new messages have been posted, if you want to catch up on what you missed, you have to scroll up to the top, click the 'load more messages' button, scroll up to the top, click 'load more messages, ad nauseum, till eventually you reach a point where the "New Messages" line is no longer at the top, then scroll back down till you find the "New Messages" line again.
I think it would be very useful if there was a button (I would name it "load new messages") that appeared along with the 'load more messages' button when the first new message is above the first visible message, that would load all the way back to first new message with a single click.
Actually, having had to click "Load more messages" way to many times again today, I don't think this even requires a new line of text for the link. The text on the "New Messages" line could simply be made into a link when the first new message is above the first visible message.
Can we please get this feature? Having to wait for it to load more messages over and over and over has become really annoying and tiresome.
Enabling automatic loading of old messages when you scroll to the top is a good suggestion, but not everyone likes that, so it should be an optional feature. With the suggestion posted here on the other hand, if you don't want to scroll all the way to the first new message, you just don't click that link.
This option would definitively be needed.
Alternatively, that the old messages are loaded as soon as one has scrolled all the way up. Other websites (twitter, facebook etc) already know how to do that.