(piston duplication glitch, etc)This Bug has been up for TOO long

id really like, if you guys could please just fix these specific bugs that have been irritating me for the longest time. 

First bug: sticky piston/ piston / diamond block, iron block gold block , etc ore block/ dropper, dispenser duplication glitch. The way you trigger the pistons dupe glitch is by using redstone, redstone repeaters and the piston, you hit the button that powers the repeaters and you need to time your quick move good for it to glitch the chest into thinking you didn't take anything out of it when you really did. You quick move the item and it kicks you out the chest then moves it. People use this all the time. The diamond block glitch is back as well. Where you place the block and pick it up and place it back on the floor as quick as u can and it replaces it. The dropper one idc about. I don't know how to do it but i know about it.

 

bug 2: these commands do not work at all or they glitch alot. First its the /clear command not clearing the item In the persons inventory, when you have the item in your inventory and have the command block on repeating for ONLY sticky pistons it doesn't clear it at all. Its like this as well for iron_ingots and gold_ingots. This really annoys me and i really beg you guys to just fix more bugs that people tell you to fix if you want your game to stay up and running. These are the bugs that need/ HAVE to be fixed as soon as possible. Thank you.