force redraw of the whole boomer to assert reassignment of ownership; it's heavy-handed but it works

src/main/scala/net/psforever/objects/BoomerDeployable.scala

@@ -13,6 +13,7 @@ import net.psforever.objects.vital.interaction.DamageInteraction
 import net.psforever.objects.zones.Zone
 import net.psforever.services.Service
 import net.psforever.services.avatar.{AvatarAction, AvatarServiceMessage}
+import net.psforever.services.local.{LocalAction, LocalServiceMessage}
 import net.psforever.types.PlanetSideEmpire
 
 import scala.annotation.unused
@@ -81,8 +82,14 @@ class BoomerDeployableControl(mine: BoomerDeployable)
   }
 
   override def gainOwnership(player: Player): Unit = {
-    mine.Faction = PlanetSideEmpire.NEUTRAL //force map icon redraw
+    val originalOwner = mine.OwnerName
     super.gainOwnership(player, player.Faction)
+    val events = mine.Zone.LocalEvents
+    val msg = LocalAction.DeployItem(mine)
+    originalOwner.collect { name =>
+      events ! LocalServiceMessage(name, msg)
+    }
+    events ! LocalServiceMessage(player.Name, msg)
   }
 
   override def dismissDeployable() : Unit = {

src/main/scala/net/psforever/objects/avatar/PlayerControl.scala

@@ -1168,10 +1168,14 @@ class PlayerControl(player: Player, avatarActor: typed.ActorRef[AvatarActor.Comm
         zone.GUID(trigger.Companion) match {
           case Some(obj: BoomerDeployable) =>
             val deployables = player.avatar.deployables
-            if (deployables.Valid(obj)) {
+            if (!deployables.Contains(obj) && deployables.Valid(obj)) {
+              events ! AvatarServiceMessage(toChannel, AvatarAction.SendResponse(
+                Service.defaultPlayerGUID,
+                GenericObjectAction2Message(1, player.GUID, trigger.GUID)
+              ))
               Players.gainDeployableOwnership(player, obj, deployables.AddOverLimit)
             }
-          case _ => ;
+          case _ => ()
         }
 
       case citem: ConstructionItem
@@ -1182,7 +1186,7 @@ class PlayerControl(player: Player, avatarActor: typed.ActorRef[AvatarActor.Comm
         }
         Deployables.initializeConstructionItem(player.avatar.certifications, citem)
 
-      case _ => ;
+      case _ => ()
     }
     events ! AvatarServiceMessage(
       toChannel,