diff --git a/calendar/js/et2_widget_event.js b/calendar/js/et2_widget_event.js
index 071877ba8b..3e3bfb268e 100644
--- a/calendar/js/et2_widget_event.js
+++ b/calendar/js/et2_widget_event.js
@@ -684,9 +684,11 @@ var et2_calendar_event = /** @class */ (function (_super) {
      *
      * @param event
      * @param filter
+     * @param owner The owner of the target / parent, not the event owner
      * @private
      */
     et2_calendar_event.prototype._status_check = function (event, filter, owner) {
+        var _a;
         if (!owner || !event) {
             return false;
         }
@@ -717,12 +719,16 @@ var et2_calendar_event = /** @class */ (function (_super) {
             }
             if ((isNaN(parseInt(owner)) || parseInt(owner) < 0) && options && typeof options.find == "function") {
                 var resource = options.find(function (element) {
-                    return element.id == owner;
+                    return element.id == owner && element.resources;
                 }) || {};
-                if (resource && resource.resources) {
-                    var matching_participant = resource.resources.filter(function (id) { return typeof event.participants[id] != "undefined"; });
+                var matching_participant = (_a = resource) === null || _a === void 0 ? void 0 : _a.resources.filter(function (id) { return typeof event.participants[id] != "undefined"; });
+                if (matching_participant.length > 0) {
                     return this._status_check(event, filter, matching_participant);
                 }
+                else if (filter == 'owner' && resource && resource.resources.indexOf(event.owner)) {
+                    // owner param was a group but event is owned by someone in that group
+                    return true;
+                }
             }
         }
         var status = et2_calendar_event.split_status(participant);
diff --git a/calendar/js/et2_widget_event.ts b/calendar/js/et2_widget_event.ts
index 30be710b0f..29244b49da 100644
--- a/calendar/js/et2_widget_event.ts
+++ b/calendar/js/et2_widget_event.ts
@@ -881,6 +881,7 @@ export class et2_calendar_event extends et2_valueWidget implements et2_IDetached
 	 *
 	 * @param event
 	 * @param filter
+	 * @param owner The owner of the target / parent, not the event owner
 	 * @private
 	 */
 	_status_check(event, filter: string, owner: string | string[]): boolean
@@ -929,13 +930,18 @@ export class et2_calendar_event extends et2_valueWidget implements et2_IDetached
 			{
 				let resource = options.find(function (element)
                 {
-                    return element.id == owner;
+                    return element.id == owner && element.resources;
                 }) || {};
-				if(resource && resource.resources)
+				let matching_participant = resource?.resources.filter(id => typeof event.participants[id] != "undefined");
+				if(matching_participant.length > 0)
 				{
-					let matching_participant = resource.resources.filter(id => typeof event.participants[id] != "undefined");
 					return this._status_check(event, filter, matching_participant);
 				}
+				else if (filter == 'owner' && resource && resource.resources.indexOf(event.owner))
+				{
+					// owner param was a group but event is owned by someone in that group
+					return true;
+				}
 			}
 		}