diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index a38274f..92c7bbd 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -27,9 +27,14 @@ jobs:
         node-version: 18.x
     - run: yarn install
     - run: yarn run build-full-test
+    - id: setup-chrome
+      uses: browser-actions/setup-chrome@v1
     # set up a virtual display for chrome (since the tests don't currently run it in headless mode)
     # then run the tests
-    - run: |
+    - name: Run Tests
+      env:
+        CHROME_PATH: ${{ steps.setup-chrome.outputs.chrome-path }}
+      run: |
         export DISPLAY=:99
         sudo Xvfb -ac :99 -screen 0 1280x1024x24 > /dev/null 2>&1 &
         yarn test
diff --git a/package.json b/package.json
index 4b1700d..2c2e710 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@webrecorder/wombat",
-  "version": "3.8.3",
+  "version": "3.8.4",
   "main": "index.js",
   "license": "AGPL-3.0-or-later",
   "author": "Ilya Kreymer, Webrecorder Software",
diff --git a/src/wombat.js b/src/wombat.js
index b95a000..51f56f7 100755
--- a/src/wombat.js
+++ b/src/wombat.js
@@ -4549,7 +4549,9 @@ Wombat.prototype.initHTTPOverrides = function() {
     // responseURL override
   this.overridePropExtract(this.$wbwindow.XMLHttpRequest.prototype, 'responseURL');
 
-  if (!this.wb_info.isSW) {
+  var convertToGet = !!this.wb_info.convert_post_to_get;
+
+  if (!this.wb_info.isSW && !convertToGet) {
     if (this.$wbwindow.XMLHttpRequest.prototype.open) {
       var origXMLHttpOpen = this.$wbwindow.XMLHttpRequest.prototype.open;
       this.utilFns.XHRopen = origXMLHttpOpen;
@@ -4588,9 +4590,6 @@ Wombat.prototype.initHTTPOverrides = function() {
       this.__WB_xhr_headers.set(name, value);
     };
 
-    var wombat = this;
-    var convertToGet = !!this.wb_info.convert_post_to_get;
-
     this.$wbwindow.XMLHttpRequest.prototype.send = async function(value) {
       if (convertToGet && (this.__WB_xhr_open_arguments[0] === 'POST' || this.__WB_xhr_open_arguments[0] === 'PUT')) {