diff --git a/examples/cdp_mode/raw_multi_async.py b/examples/cdp_mode/raw_multi_async.py
new file mode 100644
index 00000000000..cfbd64a2db3
--- /dev/null
+++ b/examples/cdp_mode/raw_multi_async.py
@@ -0,0 +1,29 @@
+# Testing multiple CDP drivers using the async API
+import asyncio
+from concurrent.futures import ThreadPoolExecutor
+from random import randint
+from seleniumbase.undetected import cdp_driver
+
+
+async def main(url):
+    driver = await cdp_driver.cdp_util.start_async()
+    page = await driver.get(url)
+    await page.set_window_rect(randint(4, 600), randint(8, 410), 860, 500)
+    await page.sleep(0.5)
+    field = await page.select("input")
+    await field.send_keys_async("Text")
+    button = await page.select("button")
+    await button.click_async()
+    await page.sleep(2)
+
+
+def set_up_loop(url):
+    loop = asyncio.new_event_loop()
+    loop.run_until_complete(main(url))
+
+
+if __name__ == "__main__":
+    urls = ["https://seleniumbase.io/demo_page" for i in range(4)]
+    with ThreadPoolExecutor(max_workers=len(urls)) as executor:
+        for url in urls:
+            executor.submit(set_up_loop, url)
diff --git a/examples/cdp_mode/raw_multi_cdp.py b/examples/cdp_mode/raw_multi_cdp.py
new file mode 100644
index 00000000000..c7f42f4f6a4
--- /dev/null
+++ b/examples/cdp_mode/raw_multi_cdp.py
@@ -0,0 +1,25 @@
+# Testing multiple CDP drivers using the sync API
+import asyncio
+from concurrent.futures import ThreadPoolExecutor
+from random import randint
+from seleniumbase.core import sb_cdp
+from seleniumbase.undetected import cdp_driver
+
+
+def main(url):
+    loop = asyncio.new_event_loop()
+    driver = cdp_driver.cdp_util.start_sync()
+    page = loop.run_until_complete(driver.get(url))
+    sb = sb_cdp.CDPMethods(loop, page, driver)
+    sb.set_window_rect(randint(4, 720), randint(8, 410), 800, 500)
+    sb.press_keys("input", "Text")
+    sb.highlight("button")
+    sb.click("button")
+    sb.sleep(2)
+
+
+if __name__ == "__main__":
+    urls = ["https://seleniumbase.io/demo_page" for i in range(4)]
+    with ThreadPoolExecutor(max_workers=len(urls)) as executor:
+        for url in urls:
+            executor.submit(main, url)
diff --git a/seleniumbase/__version__.py b/seleniumbase/__version__.py
index ad541b90471..7cfecb2463f 100755
--- a/seleniumbase/__version__.py
+++ b/seleniumbase/__version__.py
@@ -1,2 +1,2 @@
 # seleniumbase package
-__version__ = "4.34.7"
+__version__ = "4.34.8"
diff --git a/seleniumbase/core/sb_cdp.py b/seleniumbase/core/sb_cdp.py
index 403011e894e..98755cc7c1b 100644
--- a/seleniumbase/core/sb_cdp.py
+++ b/seleniumbase/core/sb_cdp.py
@@ -877,8 +877,13 @@ def set_value(self, selector, text, timeout=None):
 
     def evaluate(self, expression):
         """Run a JavaScript expression and return the result."""
-        if expression.startswith("return "):
-            expression = expression[len("return "):]
+        expression = expression.strip()
+        exp_list = expression.split("\n")
+        if exp_list and exp_list[-1].strip().startswith("return "):
+            expression = (
+                "\n".join(exp_list[0:-1]) + "\n"
+                + exp_list[-1].strip()[len("return "):]
+            ).strip()
         return self.loop.run_until_complete(
             self.page.evaluate(expression)
         )
diff --git a/seleniumbase/undetected/cdp_driver/cdp_util.py b/seleniumbase/undetected/cdp_driver/cdp_util.py
index 237ba3b28b3..a30ddb536d3 100644
--- a/seleniumbase/undetected/cdp_driver/cdp_util.py
+++ b/seleniumbase/undetected/cdp_driver/cdp_util.py
@@ -241,7 +241,18 @@ async def start_async(*args, **kwargs) -> Browser:
 
 
 def start_sync(*args, **kwargs) -> Browser:
-    loop = asyncio.get_event_loop()
+    loop = None
+    if (
+        "loop" in kwargs
+        and kwargs["loop"]
+        and hasattr(kwargs["loop"], "create_task")
+    ):
+        loop = kwargs["loop"]
+    else:
+        try:
+            loop = asyncio.get_event_loop()
+        except RuntimeError:
+            loop = asyncio.new_event_loop()
     headless = False
     binary_location = None
     if "browser_executable_path" in kwargs:
diff --git a/seleniumbase/undetected/cdp_driver/tab.py b/seleniumbase/undetected/cdp_driver/tab.py
index 7cc3f71c589..3f74354989a 100644
--- a/seleniumbase/undetected/cdp_driver/tab.py
+++ b/seleniumbase/undetected/cdp_driver/tab.py
@@ -896,6 +896,10 @@ async def set_window_size(self, left=0, top=0, width=1280, height=1024):
         """
         return await self.set_window_state(left, top, width, height)
 
+    async def set_window_rect(self, left=0, top=0, width=1280, height=1024):
+        """Same as set_window_size(). Uses a different naming convention."""
+        return await self.set_window_state(left, top, width, height)
+
     async def activate(self):
         """Active this target (Eg: tab, window, page)"""
         await self.send(cdp.target.activate_target(self.target.target_id))