diff --git a/History.md b/History.md
index c2a1f3a7d7..adc688bc50 100644
--- a/History.md
+++ b/History.md
@@ -68,9 +68,13 @@ N/A
   planning a quick follow-up Meteor 1.8.1 release, which can be obtained
   by running the command
   ```bash
-  meteor update --release 1.8.1
+  meteor update --release 1.8.1-beta.n
   ```
+  where `-beta.n` is the latest beta release according to the
+  [releases](https://github.com/meteor/meteor/releases) page (currently
+  `-beta.6`).
   [Issue #10216](https://github.com/meteor/meteor/issues/10216)
+  [PR #10248](https://github.com/meteor/meteor/pull/10248)
 
 * Meteor 1.7 introduced a new client bundle called `web.browser.legacy` in
   addition to the `web.browser` (modern) and `web.cordova` bundles.
diff --git a/packages/dynamic-import/dynamic-versions.js b/packages/dynamic-import/dynamic-versions.js
index 41b749a2f7..93494a9a7f 100644
--- a/packages/dynamic-import/dynamic-versions.js
+++ b/packages/dynamic-import/dynamic-versions.js
@@ -69,7 +69,9 @@ function precacheOnLoad(event) {
       return module.prefetch(id);
     })).then(function () {
       if (modules.length > 0) {
-        prefetchInChunks(modules, amount);
+        setTimeout(function () {
+          prefetchInChunks(modules, amount);
+        }, 0);
       }
     });
   }
diff --git a/packages/dynamic-import/package.js b/packages/dynamic-import/package.js
index b57a77067b..0c87536f80 100644
--- a/packages/dynamic-import/package.js
+++ b/packages/dynamic-import/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name: "dynamic-import",
-  version: "0.5.0",
+  version: "0.5.1",
   summary: "Runtime support for Meteor 1.5 dynamic import(...) syntax",
   documentation: "README.md"
 });
diff --git a/packages/oauth/end_of_popup_response.js b/packages/oauth/end_of_popup_response.js
index fd6a1ae20b..ed554160db 100644
--- a/packages/oauth/end_of_popup_response.js
+++ b/packages/oauth/end_of_popup_response.js
@@ -9,8 +9,8 @@
 
     if (config.isCordova) {
       var credentialString = JSON.stringify({
-        credentialToken,
-        credentialSecret,
+        credentialToken: credentialToken,
+        credentialSecret: credentialSecret
       });
 
       window.location.hash = credentialString;
diff --git a/packages/oauth/package.js b/packages/oauth/package.js
index 524b0aeed9..841f327a07 100644
--- a/packages/oauth/package.js
+++ b/packages/oauth/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Common code for OAuth-based services",
-  version: "1.2.6"
+  version: "1.2.7"
 });
 
 Package.onUse(api => {
diff --git a/packages/webapp/package.js b/packages/webapp/package.js
index 66327cca2d..58617b104f 100644
--- a/packages/webapp/package.js
+++ b/packages/webapp/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Serves a Meteor app over HTTP",
-  version: '1.7.2-beta181.6'
+  version: '1.7.2'
 });
 
 Npm.depends({"basic-auth-connect": "1.0.0",
diff --git a/packages/webapp/webapp_server.js b/packages/webapp/webapp_server.js
index 1fa2daa65c..1037d44aa7 100644
--- a/packages/webapp/webapp_server.js
+++ b/packages/webapp/webapp_server.js
@@ -386,12 +386,7 @@ WebAppInternals.staticFilesMiddleware = async function (
     res.end();
   };
 
-  if (pathname === "/meteor_runtime_config.js" &&
-      ! WebAppInternals.inlineScriptsAllowed()) {
-    serveStaticJs("__meteor_runtime_config__ = " +
-                  JSON.stringify(__meteor_runtime_config__) + ";");
-    return;
-  } else if (_.has(additionalStaticJs, pathname) &&
+  if (_.has(additionalStaticJs, pathname) &&
               ! WebAppInternals.inlineScriptsAllowed()) {
     serveStaticJs(additionalStaticJs[pathname]);
     return;
@@ -404,7 +399,14 @@ WebAppInternals.staticFilesMiddleware = async function (
 
   // If pauseClient(arch) has been called, program.paused will be a
   // Promise that will be resolved when the program is unpaused.
-  await WebApp.clientPrograms[arch].paused;
+  const program = WebApp.clientPrograms[arch];
+  await program.paused;
+
+  if (path === "/meteor_runtime_config.js" &&
+      ! WebAppInternals.inlineScriptsAllowed()) {
+    serveStaticJs(`__meteor_runtime_config__ = ${program.meteorRuntimeConfig};`);
+    return;
+  }
 
   const info = getStaticFileInfo(pathname, path, arch);
   if (! info) {
@@ -789,13 +791,18 @@ function runWebAppServer() {
 
   function generateBoilerplateForArch(arch) {
     const program = WebApp.clientPrograms[arch];
+    const additionalOptions = defaultOptionsForArch[arch] || {};
     const { baseData } = boilerplateByArch[arch] =
       WebAppInternals.generateBoilerplateInstance(
         arch,
         program.manifest,
-        defaultOptionsForArch[arch],
+        additionalOptions,
       );
-
+    // We need the runtime config with overrides for meteor_runtime_config.js:
+    program.meteorRuntimeConfig = JSON.stringify({
+      ...__meteor_runtime_config__,
+      ...(additionalOptions.runtimeConfigOverrides || null),
+    });
     program.refreshableAssets = baseData.css.map(file => ({
       url: bundledJsCssUrlRewriteHook(file.url),
     }));
@@ -835,7 +842,7 @@ function runWebAppServer() {
   // Do this before the next middleware destroys req.url if a path prefix
   // is set to close #10111.
   app.use(query());
-  
+
   function getPathParts(path) {
     const parts = path.split("/");
     while (parts[0] === "") parts.shift();