When replying to a threaded mail in the mobile client, I expect the threading indicators (>) to be respected. This works fine in the desktop client, but in the mobile client, the threading isn't respected, so when I try to reply to a message, the last sender's mail doesn't have the '>' symbol in front of their text, and previous replies are not incremented to >> or whatever.
This makes it impossible to use the mobile client to respond to long mail threads without manually going through all of the text and editing the thread indicators, which is crazy.