Non-existent to pitiful. I guess many people have the expectation it would behave like desktop Ubuntu. But it doesn't. The people responsible for this part of behavior have time and again used the "iOS does it like this and look how successfull it is" excuse. Ubuntu Touch is looking at copying iOS in many aspects because they see it as successfull and what users want and need, and there doesn't seem to be much room for trying to do some of these things better.