diff --git a/src/core/events.js b/src/core/events.js
index 8106957fa..9919d8c67 100644
--- a/src/core/events.js
+++ b/src/core/events.js
@@ -237,11 +237,13 @@ const scroll_event = () => {
     });
 };
 
-const submit_event = () => {
-    return new Event("submit", {
+const submit_event = ({ submitter } = { submitter: undefined }) => {
+    const event = new Event("submit", {
         bubbles: true,
         cancelable: true,
     });
+    event.submitter = submitter; // undefined or the submitting element
+    return event;
 };
 
 const dragstart_event = () => {
diff --git a/src/core/events.test.js b/src/core/events.test.js
index f03e53f49..030fa94fc 100644
--- a/src/core/events.test.js
+++ b/src/core/events.test.js
@@ -546,12 +546,27 @@ describe("core.events tests", () => {
         });
 
         it("submit event", async () => {
-            outer.addEventListener("submit", () => {
+            let submitter = "not defined";
+            outer.addEventListener("submit", (e) => {
                 catched = "outer";
+                submitter = e.submitter;
             });
             inner.dispatchEvent(events.submit_event());
             await utils.timeout(1);
             expect(catched).toBe("outer");
+            expect(submitter).toBe(undefined);
+        });
+
+        it("submit event with defined submitter", async () => {
+            let submitter = "not defined";
+            outer.addEventListener("submit", (e) => {
+                catched = "outer";
+                submitter = e.submitter;
+            });
+            inner.dispatchEvent(events.submit_event({ submitter: inner }));
+            await utils.timeout(1);
+            expect(catched).toBe("outer");
+            expect(submitter).toBe(inner);
         });
 
         it("dragstart event", async () => {
diff --git a/src/lib/input-change-events.js b/src/lib/input-change-events.js
index 3048c4f18..1ef2a02af 100644
--- a/src/lib/input-change-events.js
+++ b/src/lib/input-change-events.js
@@ -1,17 +1,17 @@
 // helper functions to make all input elements
 import $ from "jquery";
 import logging from "../core/logging";
-var namespace = "input-change-events";
+const namespace = "input-change-events";
 const log = logging.getLogger(namespace);
 
-var _ = {
+const _ = {
     setup: function ($el, pat) {
         if (!pat) {
             log.error("The name of the calling pattern has to be set.");
             return;
         }
         // list of patterns that installed input-change-event handlers
-        var patterns = $el.data(namespace) || [];
+        const patterns = $el.data(namespace) || [];
         log.debug("setup handlers for " + pat);
 
         if (!patterns.length) {
@@ -42,9 +42,9 @@ var _ = {
     },
 
     registerHandlersForElement: function () {
-        var $el = $(this),
-            isNumber = $el.is("input[type=number]"),
-            isText = $el.is("input:text, input[type=search], textarea");
+        const $el = $(this);
+        const isNumber = $el.is("input[type=number]");
+        const isText = $el.is("input:text, input[type=search], textarea");
 
         if (isNumber) {
             // for <input type="number" /> we want to trigger the change
@@ -74,7 +74,7 @@ var _ = {
     },
 
     remove: function ($el, pat) {
-        var patterns = $el.data(namespace) || [];
+        let patterns = $el.data(namespace) || [];
         if (patterns.indexOf(pat) === -1) {
             log.warn("input-change-events were never installed for " + pat);
         } else {
diff --git a/src/pat/auto-submit/auto-submit.js b/src/pat/auto-submit/auto-submit.js
index 1df3d5886..3a9c787de 100644
--- a/src/pat/auto-submit/auto-submit.js
+++ b/src/pat/auto-submit/auto-submit.js
@@ -66,7 +66,7 @@ export default Base.extend({
 
         // get all subforms whice are not yet auto submit forms.
         const subforms = el.querySelectorAll(
-            ".pat-autosubmit:not(.pat-autosubmit):not(.pat-auto-submit)"
+            ".pat-subform:not(.pat-autosubmit):not(.pat-auto-submit)"
         );
         for (const subform of subforms) {
             // register autosubmit on subform
@@ -128,7 +128,7 @@ export default Base.extend({
 
     onInputChange(e) {
         e.stopPropagation();
-        this.el.dispatchEvent(events.submit_event());
+        this.el.dispatchEvent(events.submit_event({ submitter: e.target }));
         log.debug("triggered by " + e.type);
     },
 });
diff --git a/src/pat/inject/inject.test.js b/src/pat/inject/inject.test.js
index eaa0b4820..d99c21247 100644
--- a/src/pat/inject/inject.test.js
+++ b/src/pat/inject/inject.test.js
@@ -1110,7 +1110,9 @@ describe("pat-inject", function () {
                         // Work around jsDOM not submitting with image buttons.
                         $submit[0].addEventListener("click", async () => {
                             await utils.timeout(1); // wait a tick for click event reaching form before submitting.
-                            $submit[0].form.dispatchEvent(events.submit_event());
+                            $submit[0].form.dispatchEvent(
+                                events.submit_event({ submitter: $submit[0] })
+                            );
                         });
 
                         $submit[0].click();