I was trying to program a command block to put a chest with 2 items in it. One item is a Diamond Chestplate with Fire Protection IV on it (no issue it worked fine)
The other item is a Potion of Fire Resistance (8:00) This one causes the bug.

Here is the code used:

setblock -2090 70 -271 minecraft:chest 0 replace {Items:[{id:311,Slot:1,tag:{ench:[{id:1,lvl:4}]}},{id:373,Slot:4,tag:{ench:[{id:8259}]}}]}

The effect that happens is a chest appears with 2 items in their proper slots. All is normal when I point to the armor. However, the potion is a bottle of water AND when I point to it the game crashes.

The act of pointing to the bottle of water crashes the game.

When I use the Potion ID:373:8259 I don't even get a bottle of water.

Sorry, I started playing with the setblock command 2 days ago. I'm probably missing something.