diff --git a/src/components/editor/CourtBall.tsx b/src/components/editor/CourtBall.tsx
index c9c48dc..6eb1a8a 100644
--- a/src/components/editor/CourtBall.tsx
+++ b/src/components/editor/CourtBall.tsx
@@ -1,34 +1,31 @@
-import { useRef } from "react"
+import { KeyboardEventHandler, RefObject, useRef } from "react"
 import Draggable from "react-draggable"
 import { BallPiece } from "./BallPiece"
-import { NULL_POS } from "../../geo/Pos"
+import { NULL_POS, Pos } from "../../geo/Pos"
 import { Ball } from "../../model/tactic/CourtObjects"
 
 export interface CourtBallProps {
+    ball: Ball
+}
+
+export interface EditableCourtBallProps extends CourtBallProps {
     onPosValidated: (rect: DOMRect) => void
     onRemove: () => void
-    ball: Ball
 }
 
-export function CourtBall({ onPosValidated, ball, onRemove }: CourtBallProps) {
-    const pieceRef = useRef<HTMLDivElement>(null)
 
-    const { x, y } = ball.pos
+export function CourtBall({ onPosValidated, ball, onRemove }: EditableCourtBallProps) {
+    const pieceRef = useRef<HTMLDivElement>(null)
 
-    return (
-        <Draggable
-            onStop={() =>
-                onPosValidated(pieceRef.current!.getBoundingClientRect())
-            }
-            position={NULL_POS}
-            nodeRef={pieceRef}>
+    function courtBallPiece({ x, y }: Pos,
+                            pieceRef?: RefObject<HTMLDivElement>,
+                            onKeyUp?: KeyboardEventHandler) {
+        return (
             <div
                 className={"ball-div"}
                 ref={pieceRef}
                 tabIndex={0}
-                onKeyUp={(e) => {
-                    if (e.key == "Delete") onRemove()
-                }}
+                onKeyUp={onKeyUp}
                 style={{
                     position: "absolute",
                     left: `${x * 100}%`,
@@ -36,6 +33,30 @@ export function CourtBall({ onPosValidated, ball, onRemove }: CourtBallProps) {
                 }}>
                 <BallPiece />
             </div>
+        )
+    }
+
+    if (ball.frozen) {
+        return courtBallPiece(ball.pos)
+    }
+
+    return (
+        <Draggable
+            onStop={() =>
+                onPosValidated(pieceRef.current!.getBoundingClientRect())
+            }
+            position={NULL_POS}
+            nodeRef={pieceRef}>
+            {courtBallPiece(
+                ball.pos,
+                pieceRef,
+                (e) => {
+                    if (e.key == "Delete") onRemove()
+                },
+            )}
         </Draggable>
     )
 }
+
+
+
diff --git a/src/editor/PlayerDomains.ts b/src/editor/PlayerDomains.ts
index 19ca23e..6eef2a3 100644
--- a/src/editor/PlayerDomains.ts
+++ b/src/editor/PlayerDomains.ts
@@ -258,7 +258,7 @@ export function removePlayer(
                 content.components,
             )!
             const actions = playerBefore.actions.filter(
-                (a) => a.target === pos.attach,
+                (a) => a.target !== pos.attach,
             )
             content = updateComponent(
                 {
diff --git a/src/editor/TacticContentDomains.ts b/src/editor/TacticContentDomains.ts
index 28ab879..e2e8a2f 100644
--- a/src/editor/TacticContentDomains.ts
+++ b/src/editor/TacticContentDomains.ts
@@ -77,6 +77,7 @@ export function placeObjectAt(
                 id: BALL_ID,
                 pos,
                 actions: [],
+                frozen: false
             }
             break
         }
@@ -153,6 +154,7 @@ export function placeBallAt(
         id: BALL_ID,
         pos,
         actions: [],
+        frozen: false,
     }
 
     let components = content.components
@@ -198,9 +200,9 @@ export function moveComponent(
             phantomIdx == 0
                 ? origin
                 : getComponent(
-                      originPathItems[phantomIdx - 1],
-                      content.components,
-                  )
+                    originPathItems[phantomIdx - 1],
+                    content.components,
+                )
         // detach the action from the screen target and transform it to a regular move action to the phantom.
         content = updateComponent(
             {
@@ -208,18 +210,18 @@ export function moveComponent(
                 actions: playerBeforePhantom.actions.map((a) =>
                     a.target === referent
                         ? {
-                              ...a,
-                              segments: a.segments.toSpliced(
-                                  a.segments.length - 2,
-                                  1,
-                                  {
-                                      ...a.segments[a.segments.length - 1],
-                                      next: component.id,
-                                  },
-                              ),
-                              target: component.id,
-                              type: ActionKind.MOVE,
-                          }
+                            ...a,
+                            segments: a.segments.toSpliced(
+                                a.segments.length - 2,
+                                1,
+                                {
+                                    ...a.segments[a.segments.length - 1],
+                                    next: component.id,
+                                },
+                            ),
+                            target: component.id,
+                            type: ActionKind.MOVE,
+                        }
                         : a,
                 ),
             },
@@ -232,9 +234,9 @@ export function moveComponent(
             ...component,
             pos: isPhantom
                 ? {
-                      type: "fixed",
-                      ...newPos,
-                  }
+                    type: "fixed",
+                    ...newPos,
+                }
                 : newPos,
         },
         content,
@@ -313,12 +315,15 @@ export function computeTerminalState(
         content.components.filter((c) => c.type !== "phantom") as (
             | Player
             | CourtObject
-        )[]
+            )[]
 
     const componentsTargetedState = nonPhantomComponents.map((comp) =>
         comp.type === "player"
             ? getPlayerTerminalState(comp, content, computedPositions)
-            : comp,
+            : {
+                ...comp,
+                frozen: true,
+            },
     )
 
     return {
@@ -396,6 +401,11 @@ export function drainTerminalStateOnChildContent(
 ): StepContent | null {
     let gotUpdated = false
 
+    //filter out all frozen components that are not present on the parent's terminal state anymore
+    childContent = {
+        components: childContent.components.filter(comp => comp.type === "phantom" || (comp.frozen && tryGetComponent(comp.id, parentTerminalState.components)))
+    }
+
     for (const parentComponent of parentTerminalState.components) {
         const childComponent = tryGetComponent(
             parentComponent.id,
diff --git a/src/model/tactic/CourtObjects.ts b/src/model/tactic/CourtObjects.ts
index 5f72199..6751e65 100644
--- a/src/model/tactic/CourtObjects.ts
+++ b/src/model/tactic/CourtObjects.ts
@@ -7,4 +7,6 @@ export const BALL_TYPE = "ball"
 //place here all different kinds of objects
 export type CourtObject = Ball
 
-export type Ball = Component<typeof BALL_TYPE, Pos>
+export interface Ball extends Component<typeof BALL_TYPE, Pos> {
+    readonly frozen: boolean
+}
diff --git a/src/pages/Editor.tsx b/src/pages/Editor.tsx
index da9697d..9d9c4f6 100644
--- a/src/pages/Editor.tsx
+++ b/src/pages/Editor.tsx
@@ -131,7 +131,7 @@ function EditorPortal({ guestMode }: EditorPageProps) {
 
 function GuestModeEditor() {
     const storageContent = localStorage.getItem(
-        GUEST_MODE_STEP_CONTENT_STORAGE_KEY + "0",
+        GUEST_MODE_STEP_CONTENT_STORAGE_KEY + ROOT_STEP_ID,
     )
 
     const stepInitialContent: StepContent = {
@@ -148,7 +148,7 @@ function GuestModeEditor() {
     if (storageContent == null) {
         localStorage.setItem(
             GUEST_MODE_STEP_ROOT_NODE_INFO_STORAGE_KEY,
-            JSON.stringify({ id: 0, children: [] }),
+            JSON.stringify({ id: ROOT_STEP_ID, children: [] }),
         )
         localStorage.setItem(
             GUEST_MODE_STEP_CONTENT_STORAGE_KEY + ROOT_STEP_ID,
@@ -156,6 +156,8 @@ function GuestModeEditor() {
         )
     }
 
+    const tacticName = localStorage.getItem(GUEST_MODE_TITLE_STORAGE_KEY) ?? "Nouvelle Tactique"
+
     const courtRef = useRef<HTMLDivElement>(null)
     const [stepId, setStepId] = useState(ROOT_STEP_ID)
     const [stepContent, setStepContent, saveState] = useContentState(
@@ -212,9 +214,7 @@ function GuestModeEditor() {
             tactic={{
                 id: -1,
                 rootStepNode,
-                name:
-                    localStorage.getItem(GUEST_MODE_TITLE_STORAGE_KEY) ??
-                    "Nouvelle Tactique",
+                name: tacticName,
                 courtType: "PLAIN",
             }}
             courtRef={courtRef}
@@ -244,9 +244,10 @@ function GuestModeEditor() {
                 const nodeId = getAvailableId(root)
                 const node = { id: nodeId, children: [] }
 
+                const resultTree = addStepNode(root, parent, node)
                 localStorage.setItem(
                     GUEST_MODE_STEP_ROOT_NODE_INFO_STORAGE_KEY,
-                    JSON.stringify(addStepNode(root, parent, node)),
+                    JSON.stringify(resultTree),
                 )
                 localStorage.setItem(
                     GUEST_MODE_STEP_CONTENT_STORAGE_KEY + node.id,