diff --git a/src/register/RegistrationFields/UsernameField/UsernameField.jsx b/src/register/RegistrationFields/UsernameField/UsernameField.jsx
index 59d077c62b..8ebccde33a 100644
--- a/src/register/RegistrationFields/UsernameField/UsernameField.jsx
+++ b/src/register/RegistrationFields/UsernameField/UsernameField.jsx
@@ -101,7 +101,7 @@ const UsernameField = (props) => {
   };
 
   const suggestedUsernames = () => (
-    <div className={className}>
+    <div className={className} role="listbox">
       <span className="text-gray username-suggestion--label">{formatMessage(messages['registration.username.suggestion.label'])}</span>
       <div className="username-scroll-suggested--form-field">
         {usernameSuggestions.map((username, index) => (
@@ -112,7 +112,9 @@ const UsernameField = (props) => {
             className="username-suggestions--chip data-hj-suppress"
             autoComplete={props.autoComplete}
             key={`suggestion-${index.toString()}`}
+            tabIndex={0}
             onClick={(e) => handleSuggestionClick(e, username)}
+            role="option"
           >
             {username}
           </Button>
@@ -123,7 +125,7 @@ const UsernameField = (props) => {
   );
 
   if (usernameSuggestions.length > 0 && errorMessage && value === ' ') {
-    className = 'username-suggestions__error';
+    className = 'username-suggestions';
     iconButton = <IconButton src={Close} iconAs={Icon} alt="Close" onClick={() => handleUsernameSuggestionClose()} variant="black" size="sm" className="username-suggestions__close__button" />;
     suggestedUsernameDiv = suggestedUsernames();
   } else if (usernameSuggestions.length > 0 && value === ' ') {
@@ -134,14 +136,15 @@ const UsernameField = (props) => {
     suggestedUsernameDiv = suggestedUsernames();
   }
   return (
-    <FormGroup
-      {...props}
-      handleChange={handleOnChange}
-      handleFocus={handleOnFocus}
-      handleBlur={handleOnBlur}
-    >
+    <div className="username__form-group-wrapper">
       {suggestedUsernameDiv}
-    </FormGroup>
+      <FormGroup
+        {...props}
+        handleChange={handleOnChange}
+        handleFocus={handleOnFocus}
+        handleBlur={handleOnBlur}
+      />
+    </div>
   );
 };
 
diff --git a/src/register/data/sagas.js b/src/register/data/sagas.js
index 0325cd4bec..779d6ec21f 100644
--- a/src/register/data/sagas.js
+++ b/src/register/data/sagas.js
@@ -1,11 +1,14 @@
 import { camelCaseObject } from '@edx/frontend-platform';
 import { logError, logInfo } from '@edx/frontend-platform/logging';
-import { call, put, takeEvery } from 'redux-saga/effects';
+import {
+  call, put, race, take, takeEvery,
+} from 'redux-saga/effects';
 
 import {
   fetchRealtimeValidationsBegin,
   fetchRealtimeValidationsFailure,
   fetchRealtimeValidationsSuccess,
+  REGISTER_CLEAR_USERNAME_SUGGESTIONS,
   REGISTER_FORM_VALIDATIONS,
   REGISTER_NEW_USER,
   registerNewUserBegin,
@@ -41,9 +44,15 @@ export function* handleNewUserRegistration(action) {
 export function* fetchRealtimeValidations(action) {
   try {
     yield put(fetchRealtimeValidationsBegin());
-    const { fieldValidations } = yield call(getFieldsValidations, action.payload.formPayload);
 
-    yield put(fetchRealtimeValidationsSuccess(camelCaseObject(fieldValidations)));
+    const { response } = yield race({
+      response: call(getFieldsValidations, action.payload.formPayload),
+      cancel: take(REGISTER_CLEAR_USERNAME_SUGGESTIONS),
+    });
+
+    if (response) {
+      yield put(fetchRealtimeValidationsSuccess(camelCaseObject(response.fieldValidations)));
+    }
   } catch (e) {
     if (e.response && e.response.status === 403) {
       yield put(fetchRealtimeValidationsFailure());
diff --git a/src/sass/_registration.scss b/src/sass/_registration.scss
index 75889601c8..e95d89d4ec 100644
--- a/src/sass/_registration.scss
+++ b/src/sass/_registration.scss
@@ -65,22 +65,20 @@
   margin-right: 0.25rem;
 }
 
-.username-suggestions {
+.username__form-group-wrapper {
   position: relative;
-  margin-top: -2.5rem;
-  margin-left: 15px;
 }
 
-.username-suggestions__close__button {
-  right: 1rem;
+.username-suggestions {
   position: absolute;
+  inset: 0;
+  padding-left: 15px;
+  z-index: 100;
 }
 
-.username-suggestions__error {
-  position: relative;
-  margin-top: -13.7%;
-  margin-bottom: 11%;
-  margin-left: 15px;
+.username-suggestions__close__button {
+  right: 1rem;
+  position: absolute;
 }
 
 .username-scroll-suggested--form-field {