for the double click issue I have to double click on an item after clicking the search bar in the inventory in game

after clicking on the space bar in inventory I have to double click on my mouse to get an item or punch and to place blocks

what should happen I should be able to click once after I get done with the search bar in inventory 

for the looping stopping and keeping the Redstone components on I have to break a Redstone and replace it to get it to go through

what happens is the loop stops and does not loop at all till I break a Redstone dust

what should happen is it should keep looping without stopping