Fixed #11371

core/src/mindustry/world/blocks/defense/ForceProjector.java

@@ -156,6 +156,15 @@ public class ForceProjector extends Block{
         public boolean broken = true;
         public float buildup, radscl, hit, warmup, phaseHeat;
 
+        @Override
+        public void setProp(LAccess prop, double value){
+            if(prop == LAccess.shield){
+                buildup = Math.max(shieldHealth + phaseShieldBoost * phaseHeat - (float)value, 0f);
+            }else{
+                super.setProp(prop, value);
+            }
+        }
+
         @Override
         public float range(){
             return realRadius();