Make sure we reset the formaction on the submit button

src/index.ts

@@ -796,6 +796,7 @@ export class ValidationService {
             // Because the submitter is not propagated when calling
             // form.submit(), we recreate it here.
             const submitter = submitEvent.submitter;
+            let initialFormAction = form.action;
             if (submitter) {
                 const name = submitter.getAttribute('name');
                 // If name is null, a submit button is not submitted.
@@ -814,6 +815,10 @@ export class ValidationService {
             }
 
             form.submit();
+
+            if (form.action != initialFormAction) {
+                form.action = initialFormAction;
+            }
         }
     }
 
@@ -830,7 +835,7 @@ export class ValidationService {
         let invalidFormInputUIDs = formInputUIDs.filter(uid => this.summary[uid]);
 
         if (invalidFormInputUIDs.length > 0) {
-            var firstInvalid = this.elementByUID[invalidFormInputUIDs[0]] as HTMLElement;
+            const firstInvalid = this.elementByUID[invalidFormInputUIDs[0]] as HTMLElement;
             if (firstInvalid) {
                 firstInvalid.focus();
             }