Sculk sensors are not activated upon evokers summoning vexes

The Bug:

Sculk sensors are not activated upon evokers summoning vexes.

Steps to Reproduce:

1. Build the setup as shown in the attachment below. setup.png
2. Summon an evoker on the diamond block.
3. Switch to survival mode and slowly approach the evoker so that it summons some vexes.
4. Take note as to whether or not sculk sensors are activated upon evokers summoning vexes.

Observed Behavior:

Sculk sensors are not activated upon evokers summoning vexes.

Expected Behavior:

Sculk sensors would be activated upon evokers summoning vexes.