I would like to bring up an issue that has plagued me for quite some time with split touch controls on creative mode. It is even more prevalent on this recent 0.13.0 update. It is very well known that emulated directional pads on touch screens are not as accurate as a mouse and keyboard setup. In this case trying to accurately place or break a block in the far distance without causing any nearby damage to the artwork or structure is very difficult.

First when breaking a block, it takes a second to begin removal. Then it maintains that velocity until you remove your finger off of the touch screen. This leads to frequent destruction of blocks if your finger isn't quick enough to be lifted off the screen in time.
-My suggestion to fix this issue is to add an additional slight delay after breaking the first block to prevent unwanted destruction of blocks nearby.

Second, the reach for placing or destroying blocks is too far. Attempting to play the game on smaller screens leads to very frequent mistakes that go unnoticed in the distance. This also occurs on the larger displays. Less than the smaller screens, but still unreliable enough to cause unwanted block placement or removal.

Please don't ignore this plea. This needs to be resolved for the benefit of the players/community.