diff --git a/src/components/IIIFAuthentication.js b/src/components/IIIFAuthentication.js
index b680592cb..8535070dc 100644
--- a/src/components/IIIFAuthentication.js
+++ b/src/components/IIIFAuthentication.js
@@ -8,7 +8,7 @@ import WindowAuthenticationBar from '../containers/WindowAuthenticationBar';
  * Opens a new window for click
  */
 export function IIIFAuthentication({
-  accessTokenServiceId, authServiceId, confirm = undefined, description = undefined,
+  accessTokenServiceId = undefined, authServiceId = undefined, confirm = undefined, description = undefined,
   failureDescription = undefined, failureHeader = undefined, features = 'centerscreen',
   handleAuthInteraction, header = undefined, isInteractive = true, label = undefined,
   logoutConfirm = undefined, logoutServiceId = undefined, openWindow = window.open,
@@ -16,6 +16,9 @@ export function IIIFAuthentication({
   status = null, windowId,
 }) {
   const { t } = useTranslation();
+
+  if (!accessTokenServiceId || !authServiceId) return null;
+
   /** */
   const onReceiveAccessTokenMessage = (payload) => {
     resolveAccessTokenRequest(authServiceId, accessTokenServiceId, payload);
@@ -95,8 +98,6 @@ export function IIIFAuthentication({
     );
   };
 
-  if (!authServiceId) return null;
-
   if (status === null) return renderLogin();
   if (status === 'cookie') return renderLoggingInCookie();
   if (status === 'token') return renderLoggingInToken();
@@ -107,8 +108,8 @@ export function IIIFAuthentication({
 }
 
 IIIFAuthentication.propTypes = {
-  accessTokenServiceId: PropTypes.string.isRequired,
-  authServiceId: PropTypes.string.isRequired,
+  accessTokenServiceId: PropTypes.string,
+  authServiceId: PropTypes.string,
   confirm: PropTypes.string,
   description: PropTypes.string,
   failureDescription: PropTypes.string,
diff --git a/src/components/IIIFThumbnail.js b/src/components/IIIFThumbnail.js
index 2feea6651..ee56d2f28 100644
--- a/src/components/IIIFThumbnail.js
+++ b/src/components/IIIFThumbnail.js
@@ -23,7 +23,7 @@ const Image = styled('img', { name: 'IIIFThumbnail', slot: 'image' })(() => ({
  */
 const LazyLoadedImage = ({
   border = false, placeholder, style = {}, thumbnail = null,
-  resource, maxHeight, maxWidth, thumbnailsConfig = {}, ...props
+  resource, maxHeight = null, maxWidth = null, thumbnailsConfig = {}, ...props
 }) => {
   const { ref, inView } = useInView();
   const [loaded, setLoaded] = useState(false);
@@ -117,8 +117,8 @@ const LazyLoadedImage = ({
 
 LazyLoadedImage.propTypes = {
   border: PropTypes.bool,
-  maxHeight: PropTypes.number.isRequired,
-  maxWidth: PropTypes.number.isRequired,
+  maxHeight: PropTypes.number,
+  maxWidth: PropTypes.number,
   placeholder: PropTypes.string.isRequired,
   resource: PropTypes.object.isRequired, // eslint-disable-line react/forbid-prop-types
   style: PropTypes.object, // eslint-disable-line react/forbid-prop-types
diff --git a/src/components/WindowSideBarButtons.js b/src/components/WindowSideBarButtons.js
index 7bf1ab3f0..72639f1ab 100644
--- a/src/components/WindowSideBarButtons.js
+++ b/src/components/WindowSideBarButtons.js
@@ -171,7 +171,7 @@ WindowSideBarButtons.propTypes = {
   hasCurrentLayers: PropTypes.bool,
   hasSearchResults: PropTypes.bool,
   hasSearchService: PropTypes.bool,
-  panels: PropTypes.arrayOf(PropTypes.bool),
+  panels: PropTypes.objectOf(PropTypes.bool),
   PluginComponents: PropTypes.array, // eslint-disable-line react/forbid-prop-types
   sideBarPanel: PropTypes.string,
 };