I was making a redstone sorting system, and noticed that some of the hoppers are being "skipped," as in there is no item in them, but there is one in the hopper before and after it in the sequence. For example:

Hopper 1 ====== Hopper 2 ======= Hopper 3
Gold Empty Gold
Sorry, I cant take a screenshot, i am on my computer

This was in 0.14.3, but it said that it did not exist for some reason