Crafting & Breaking Bug

Dear Mojang,
There are some bugs I would like to report. When you craft a recipe, at first, the output the result of that recipe is quite delayed. Like, e.g, if you put oak wood for sticks, it will take a bit of time for the sticks to show. When you also break any block, the animation for breaking a block sometimes dissappears and it's quite confusing if you're even breaking anything.
Regards.