Update proxy warning message and fixed console error

libs/remix-ui/helper/src/lib/helper-components.tsx

@@ -119,7 +119,7 @@ export const upgradeWithProxyMsg = () => (
 
 export const unavailableProxyLayoutMsg = () => (
   <div>
-    <p>Previous contract implementation is NOT available for upgrade comparison. <br /> A new storage layout will be saved for future upgrades.</p>
+    <p>The previous contract implementation is NOT available for an upgrade comparison<br /> A new storage layout will be saved for future upgrades.</p>
   </div>
 )
 

libs/remix-ui/run-tab/src/lib/components/contractGUI.tsx

@@ -537,6 +537,7 @@ export function ContractGUI (props: ContractGUIProps) {
                           tooltipClasses="text-nowrap"
                           tooltipId={`proxyAddressTooltip${index}`}
                           tooltipText={'Deployed ' + shortenDate(deployment.date)}
+                          key={index}
                         >
                             <Dropdown.Item
                               key={index}

libs/remix-ui/run-tab/src/lib/components/instanceContainerUI.tsx

@@ -44,7 +44,7 @@ export function InstanceContainerUI (props: InstanceContainerProps) {
       { instanceList.length > 0
         ? <div> { props.instances.instanceList.map((instance, index) => {
           return <UniversalDappUI
-            key={instance.address}
+            key={index}
             instance={instance}
             context={props.getContext()}
             removeInstance={props.removeInstance}