The legacy option not available on all node versions, so just use the

normal command again

demos/jbrowse-react-circular-genome-view/package.json

@@ -20,8 +20,8 @@
     "web-vitals": "^1.0.1"
   },
   "scripts": {
-    "start": "react-scripts --openssl-legacy-provider start",
-    "build": "react-scripts --openssl-legacy-provider build",
+    "start": "react-scripts start",
+    "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject",
     "predeploy": "npm run build",

demos/jbrowse-react-linear-genome-view/package.json

@@ -19,8 +19,8 @@
     "web-vitals": "^1.0.1"
   },
   "scripts": {
-    "start": "react-scripts --openssl-legacy-provider start",
-    "build": "react-scripts --openssl-legacy-provider build",
+    "start": "react-scripts start",
+    "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject",
     "predeploy": "npm run build",

products/jbrowse-react-linear-genome-view/stories/UsingWebWorker.stories.mdx

@@ -45,6 +45,12 @@ https://github.com/webpack/webpack/issues/13791#issuecomment-897579223 in
 create-react-app. See our demo projects for more examples
 https://jbrowse.org/jb2/docs/embedded_components/
 
+The web worker functionality is not enabled by default because it requires your
+bundler to understand the "new Worker" construct, which not all bundlers
+support, but we do recommend using it if you are able to as it can improve
+speed and user experience. Link for web pack support of new Worker syntax
+https://webpack.js.org/guides/web-workers/
+
 <Canvas withSource="open">
   <Story id="linear-view--with-web-worker" />
 </Canvas>