Quick answer: Actor → Class Defaults → Tickable When Paused = false (gameplay) or true (UI).

Pause menu opens. Enemy AI continues to tick because Tickable When Paused was on.

The Fix

Class Defaults → Actor Tick:
  Start with Tick Enabled:    true
  Tickable When Paused:       false     // gameplay actors
  Tick Interval:              0.0

// For pause menu UMG widgets:
Tickable When Paused:        true

Per-actor flag. Pick by intent. Use SetGamePaused(true) to freeze time-driven actors; UI continues independently.

Verifying

Pause game. Enemies stop ticking; menu animations continue. Without flag tuning: enemies pursue while paused.

“Pause flag right. Tick obeys.”

Related Issues

For Set Timer handle, see timer handle. For Event Dispatcher, see dispatcher.

Tickable When Paused right.