Index: ps/trunk/binaries/data/mods/public/simulation/components/UnitAI.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/components/UnitAI.js
+++ ps/trunk/binaries/data/mods/public/simulation/components/UnitAI.js
@@ -3536,7 +3536,6 @@
 	this.UnitFsm.SetNextState(this, state);
 };
 
-
 UnitAI.prototype.DeferMessage = function(msg)
 {
 	this.UnitFsm.DeferMessage(this, msg);
@@ -3592,7 +3591,11 @@
 
 	this.orderQueue = [];
 	this.order = undefined;
-	this.SetNextState("IDLE");
+
+	// Switch to IDLE as a default state, but only if our current state is not IDLE
+	// as this can trigger infinite loops by entering IDLE repeatedly.
+	if (!this.GetCurrentState().endsWith(".IDLE"))
+		this.SetNextState("IDLE");
 
 	Engine.PostMessage(this.entity, MT_UnitAIOrderDataChanged, { "to": this.GetOrderData() });