Index: binaries/data/mods/public/simulation/components/Formation.js
===================================================================
--- binaries/data/mods/public/simulation/components/Formation.js
+++ binaries/data/mods/public/simulation/components/Formation.js
@@ -892,7 +892,7 @@
 
 Formation.prototype.AreAnglesSimilar = function(a1, a2)
 {
-	const d = Math.abs(a1 - a2) % 2 * Math.PI;
+	const d = Math.abs(a1 - a2) % (2 * Math.PI);
 	return d < this.maxTurningAngle || d > 2 * Math.PI - this.maxTurningAngle;
 };