Fixed the way an actor is lightweight and re-construct from chat message.

system/scripts/dice/roll.js

@@ -370,13 +370,25 @@ export class RollL5r5e extends Roll {
         roll.data = foundry.utils.duplicate(data.data);
         roll.l5r5e = foundry.utils.duplicate(data.l5r5e);
 
-        // get real Actor object
+        // Get real Actor object
         if (data.l5r5e.actor) {
             if (data.l5r5e.actor instanceof game.l5r5e.ActorL5r5e) {
-                // duplicate break the object, relink it
+                // Duplicate break the object, relink it
                 roll.l5r5e.actor = data.l5r5e.actor;
-            } else {
-                // only id, get the object
+            } else if (data.l5r5e.actor.uuid) {
+                // Only uuid, get the object
+                let actor;
+                let tmpItem = game.l5r5e.HelpersL5r5e.fromUuidNoPack(data.l5r5e.actor.uuid);
+                if (tmpItem instanceof Actor) {
+                    actor = tmpItem;
+                } else if (tmpItem instanceof TokenDocument) {
+                    actor = tmpItem.actor;
+                }
+                if (actor) {
+                    roll.l5r5e.actor = actor;
+                }
+            } else if (data.l5r5e.actor.id) {
+                // Compat old chat message : only id
                 const actor = game.actors.get(data.l5r5e.actor.id);
                 if (actor) {
                     roll.l5r5e.actor = actor;
@@ -398,9 +410,9 @@ export class RollL5r5e extends Roll {
         json.l5r5e = foundry.utils.duplicate(this.l5r5e);
 
         // lightweight the Actor
-        if (json.l5r5e.actor) {
+        if (json.l5r5e.actor && this.l5r5e.actor?.uuid) {
             json.l5r5e.actor = {
-                id: json.l5r5e.actor._id, // method "id" not exist in json, need to use "_id" here
+                uuid: this.l5r5e.actor.uuid,
             };
         }
 

system/scripts/helpers.js

@@ -109,6 +109,36 @@ export class HelpersL5r5e {
         return CONFIG.l5r5e.roles.map((e) => game.i18n.localize(`l5r5e.roles.${e}`));
     }
 
+    /**
+     * Retrieve a Document by its Universally Unique Identifier (uuid).
+     * Exactly the same as fromUuid but without Compendium as it need async.
+     * @param {string} uuid   The uuid of the Document to retrieve
+     * @return {Document|null}
+     */
+    static fromUuidNoPack(uuid) {
+        let parts = uuid.split(".");
+        let doc;
+
+        if (parts[0] === "Compendium") {
+            // Compendium Documents need asynchronous
+            return null;
+        } else {
+            // World Documents
+            const [docName, docId] = parts.slice(0, 2);
+            parts = parts.slice(2);
+            const collection = CONFIG[docName].collection.instance;
+            doc = collection.get(docId);
+        }
+
+        // Embedded Documents
+        while (doc && parts.length > 1) {
+            const [embeddedName, embeddedId] = parts.slice(0, 2);
+            doc = doc.getEmbeddedDocument(embeddedName, embeddedId);
+            parts = parts.slice(2);
+        }
+        return doc || null;
+    }
+
     /**
      * Return the target object on a drag n drop event, or null if not found
      * @param {DragEvent} event