Removing all mobs from randomizer tag makes only Sheep and Slime spawn from randomizer

[Partonetrain]

Exact ProjectE version: ProjectE-1.18.2-PE1.0.1

Exact Forge version: 40.1.80

Steps to reproduce:

1. Remove randomizer tags from all entities, using CraftTweaker or datapacks. Here's a CT script for convenience.

<tag:entity_types:projecte:randomizer/peaceful>.clear();
<tag:entity_types:projecte:randomizer/hostile>.clear();

2. Test randomizer on both hostile and peaceful mobs
3. Observe that sheep and slime still spawn, despite being untagged

What I expected to happen:

Mob wouldn't change at all (or perhaps a crash, trying to choose an element from an empty array)

What happened instead:

Mob always changed to either slime or sheep