Redstone effect distance irregularity

Please fix redstone logic. The red stone only works down one block. It should work at least 2 blocks. This logic irregularity renders Jeb doors and other redstone contraptions usless. Also single tick piston pushing is also not working.(when a sticky piston can push instead of pull when a single tick is emitted) my tablet is the Kindle fire 8 hd. I am a redstoner, so this irregularity is extremely difficult not be annoyed by it. Thank you, I hope to see this fixed in 0.15.2, sincerely thesynthesize