It appears as a plain teal square, which does not seem correct.
Linked issues
is duplicated by 1
relates to 7
MC-20144
Saturation and Instant Health/Damage effects don't have an icon
Resolved
MC-140954
Zombie villager fists render around the head while using Programmer Art texture pack
Open
MC-141075
Villager textures are not displayed properly with Programmer Art resource pack
Open
MC-140216
[Programmer Art] Lecterns use parts of the new planks texture even in Programmer Art
Resolved
MC-141906
Campfire smoke particles not showing with programmer art texture pack
Resolved
2 more links
muzikbike
I know why this is, all effect icons, and survival inventory screen textures are stored in the same PNG file. With Programmer Art active, it changes that PNG file to what is it is 1.13.2, so the other effects get the old icons. However, this also deletes the Bad Omen effect texture, and replaces it with the placeholder texture added in that file. To fix this, simply add the Bad Omen icon to that file, and not any others.