Fix: ST: When adding/removing subtrees the tree was re-centered to the root node even if another node had focus.
Fix: ST: When adding/removing subtrees the tree was re-centered to the
root node even if another node had focus.

shelsonjava/jit,shzy2012/jit,mcanthony/jit,pingjiang/jit,tim777z/jit,tim777z/jit,tim777z/jit,philogb/jit,mcanthony/jit,shzy2012/jit,shelsonjava/jit,printedheart/jit,mcanthony/jit,shzy2012/jit,pingjiang/jit,philogb/jit,pingjiang/jit,printedheart/jit,printedheart/jit,shelsonjava/jit