diff --git a/packages/playwright-core/src/utils/stackTrace.ts b/packages/playwright-core/src/utils/stackTrace.ts
index d4631dd960..641ab1180a 100644
--- a/packages/playwright-core/src/utils/stackTrace.ts
+++ b/packages/playwright-core/src/utils/stackTrace.ts
@@ -83,9 +83,9 @@ export function captureStackTrace(rawStack?: string): ParsedStackTrace {
     const { frame, fileName } = parseStackTraceLine(line);
     if (!frame || !frame.file || !fileName)
       return null;
-    if (isInternalFileName(frame.file, frame.function))
+    if (!process.env.PWDEBUGIMPL && isInternalFileName(frame.file, frame.function))
       return null;
-    if (isTesting && fileName.includes(COVERAGE_PATH))
+    if (!process.env.PWDEBUGIMPL && isTesting && fileName.includes(COVERAGE_PATH))
       return null;
     const inCore = fileName.startsWith(CORE_LIB) || fileName.startsWith(CORE_SRC);
     const parsed: ParsedFrame = {
@@ -109,7 +109,8 @@ export function captureStackTrace(rawStack?: string): ParsedStackTrace {
     if (parsedFrames[i].inCore && !parsedFrames[i + 1].inCore) {
       const frame = parsedFrames[i].frame;
       apiName = normalizeAPIName(frame.function);
-      parsedFrames = parsedFrames.slice(i + 1);
+      if (!process.env.PWDEBUGIMPL)
+        parsedFrames = parsedFrames.slice(i + 1);
       break;
     }
   }
@@ -125,6 +126,8 @@ export function captureStackTrace(rawStack?: string): ParsedStackTrace {
 
   // Hide all test runner and library frames in the user stack (event handlers produce them).
   parsedFrames = parsedFrames.filter((f, i) => {
+    if (process.env.PWDEBUGIMPL)
+      return true;
     if (f.frame.file.startsWith(TEST_DIR_SRC) || f.frame.file.startsWith(TEST_DIR_LIB))
       return false;
     if (i && f.frame.file.startsWith(CORE_DIR))
diff --git a/packages/playwright-test/src/util.ts b/packages/playwright-test/src/util.ts
index 9fcd51208e..d43ea19bb7 100644
--- a/packages/playwright-test/src/util.ts
+++ b/packages/playwright-test/src/util.ts
@@ -35,6 +35,9 @@ const EXPECT_PATH_IMPL = require.resolve('./expectBundleImpl');
 const PLAYWRIGHT_TEST_PATH = path.join(__dirname, '..');
 
 function filterStackTrace(e: Error) {
+  if (process.env.PWDEBUGIMPL)
+    return;
+
   // This method filters internal stack frames using Error.prepareStackTrace
   // hook. Read more about the hook: https://v8.dev/docs/stack-trace-api
   //