Endermans are not closing their mouths after stop attacking you

Summary:

After the Enderman stops attacking you, it will not clot the mouth

Steps to Reproduce:

1. Launch Minecraft Bedrock Edition
2. In survival mode, look at enderman eyes
3. When it gets angry, turn to creative gamemode

Observed Results:

Enderman no longer closes his mouth, looking angry, even though he should have after forgetting you

Notes:

Screenshots/Videos Attached: Yes{}