diff --git a/src/alerts/actions.ts b/src/alerts/actions.ts
index e50238e68..ce483d1be 100644
--- a/src/alerts/actions.ts
+++ b/src/alerts/actions.ts
@@ -22,7 +22,8 @@ export const alertsShowAlert = createAction(
         type: 'alerts.action.showAlert',
         domain,
         specific,
-        props,
+        // HACK: using varargs to allow props to be optional, but it is only one arg
+        props: props.at(0),
     }),
 );
 
diff --git a/src/alerts/sagas.ts b/src/alerts/sagas.ts
index f12a29c97..421b8c113 100644
--- a/src/alerts/sagas.ts
+++ b/src/alerts/sagas.ts
@@ -35,7 +35,9 @@ function* handleShowAlert(action: ReturnType<typeof alertsShowAlert>): Generator
     try {
         const alertAction = yield* take(chan);
         // the dismiss actions will have called this already, but other actions don't
-        toaster.dismiss(key);
+        if (alertAction !== 'dismiss') {
+            toaster.dismiss(key);
+        }
 
         yield* put(alertsDidShowAlert(action.domain, action.specific, alertAction));
     } finally {
diff --git a/src/firmware/alerts/NoDfuHub.tsx b/src/firmware/alerts/NoDfuHub.tsx
index 2ede5557a..5986f746e 100644
--- a/src/firmware/alerts/NoDfuHub.tsx
+++ b/src/firmware/alerts/NoDfuHub.tsx
@@ -26,7 +26,7 @@ const NoDfuHub: React.VoidFunctionComponent = () => {
                 href={pybricksUsbDfuTroubleshootingUrl}
                 target="_blank"
             >
-                {i18n.translate('noDfuHub.suggestion2')}
+                {i18n.translate('noDfuHub.troubleshootButton')}
                 <ExternalLinkIcon />
             </AnchorButton>
         </>
diff --git a/src/index.tsx b/src/index.tsx
index 92ee13a11..0aa560fd9 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -47,9 +47,11 @@ const store = configureStore({
                     // copy of defaults
                     'meta.arg',
                     'meta.baseQueryMeta',
-                    // HACK: technically serializable, can be removed after
-                    // https://github.com/microsoft/vscode/pull/151993
+                    // monoco view state has class-based object but is technically serializable
                     'viewState.viewState.firstPosition',
+                    // contain ArrayBuffer or DataView
+                    'data',
+                    'firmwareZip',
                 ],
             },
         })