The blockEntity tracker in the shift + F3 pie chart does not display all block entities as it is supposed to, for example it will not display nearby hoppers, brewing stands, furnaces, blast furnaces, and smokers like it used to in previous versions of Minecraft. It only displays monster spawners, enchanting tables, chests, ender chests, and extended pistons. Also, it does not update when the block entity detected is removed from the world. For example, if you place an ender chest and then destroy it, the pie chart will continue to display that there is an ender chest, even if you disconnect and enter an entirely new world. The only way to reset it is to restart Minecraft entirely. This second issue is also the case with the entity tracker in the pie chart.