STILL FIXING

tests/conftest.py

@@ -293,8 +293,17 @@ def live_gui() -> Generator[tuple[subprocess.Popen, str], None, None]:
    client.reset_session()
    time.sleep(0.5)
   except: pass
-  kill_process_tree(process.pid)
-  time.sleep(1.0)
+  
+  if process.poll() is None:
+   kill_process_tree(process.pid)
+   # On Windows, taskkill /F /T can leave the Popen object in a state where it still thinks
+   # the handle is valid until waited on.
+   try:
+    process.wait(timeout=2)
+   except:
+    pass
+  
+  time.sleep(0.5)
   log_file.close()
   # Cleanup temp workspace with retry for Windows file locks
   for _ in range(5):