Reproduce it
Fill an area with sensors, and another one with shriekers.
Execute the command in the next step.
/summon mob ~ ~ ~ {Silent:1}❌ The bug reproduces
What I expected to happen
The shrieker to detect the mob when it's above it
What happened
The shrieker does not detect the mob.
Environment
Windows 10
Java 8
Sculk Shriekers only react to players.
Sculk Shriekers and Sculk Sensors react to vibrations, not sounds. They're different game mechanics.