Whenever I am in a chest or furnace, particles build up and when I exit the chest, they are all displayed at once and i am swarmed in lag. This works with nether portals, fire, status effects like poison or hunger, and the most annoying one is RAIN. I can literally not open ANYTHING while it's raining in fear of lag. Crafting tables seem to be fine but furnaces and chests are a bomb waiting to go off. The longer it's open, the worse it gets when you close it. PLEASE FIX THIS MOJANG!!!
Thank you for your report! This issue was, however, submitted at an earlier time as MCPE-14585. You may add any information you find relevant in the comment section there.