Hi Mojang!
I just wanted to let you know that there has been a bug on my computer that whenever I place a block and then destroy it, several seconds later is will duplicate itself in that exact position where I broke that block! It appears that the player or any entity (I tried it with a creeper!) will walk through the block like it is never there. Please respond and fix this bug. I am also having trouble with firing the crossbow because I am able to load it, but firing is strange because whenever I try to fire it, it does fire, but several seconds later! Please fix these bugs before the release of the 1.14 game. Thanks! (P.S. I love Minecraft, keep it up!)