diff --git a/web_drop_target/static/src/js/web_drop_target.js b/web_drop_target/static/src/js/web_drop_target.js
index 13b2ca8ac..261e58207 100644
--- a/web_drop_target/static/src/js/web_drop_target.js
+++ b/web_drop_target/static/src/js/web_drop_target.js
@@ -5,7 +5,7 @@
 
 odoo.define("web_drop_target", function(require) {
     "use strict";
-
+    const ActionManager = require("web.ActionManager");
     const FormController = require("web.FormController");
     const core = require("web.core");
     const qweb = core.qweb;
@@ -140,7 +140,15 @@ odoo.define("web_drop_target", function(require) {
          */
         _onBodyFileDragover: function(ev) {
             ev.preventDefault();
-            if (_.isEmpty(this._get_drop_items(ev))) {
+            const actionManager = this.findAncestor(function(ancestor) {
+                return ancestor instanceof ActionManager;
+            });
+            const controller = actionManager.currentDialogController;
+            if (
+                _.isEmpty(this._get_drop_items(ev)) &&
+                this._checkDragOver() &&
+                (controller == undefined || controller.jsID === this.controllerID)
+            ) {
                 const drop_zone_offset = this.$drop_zone.offset();
                 const overlay_css = {
                     top: drop_zone_offset.top,
@@ -156,6 +164,10 @@ odoo.define("web_drop_target", function(require) {
             }
         },
 
+        _checkDragOver: function() {
+            return true;
+        },
+
         /**
          * @private
          * @param {MouseEvent} ev
@@ -309,6 +321,9 @@ odoo.define("web_drop_target", function(require) {
             _get_record_id: function() {
                 return this.renderer.state.res_id;
             },
+            _checkDragOver: function() {
+                return this.renderer.chatter;
+            },
         })
     );