diff --git a/browser_utils/page_controller.py b/browser_utils/page_controller.py
index 38c3dda..fa682dd 100644
--- a/browser_utils/page_controller.py
+++ b/browser_utils/page_controller.py
@@ -152,11 +152,8 @@ async def submit_prompt(
                     check_client_disconnected, "After Input Visible"
                 )
 
-                # Fill textarea using centralized logic (inherited from InputController if possible, or direct)
-                await textarea.evaluate(
-                    "(el, t) => { el.value = t; el.dispatchEvent(new Event('input', {bubbles:true})); el.dispatchEvent(new Event('change', {bubbles:true})); }",
-                    prompt,
-                )
+                # Use Playwright-native fill so Angular/React/Vue input handlers receive proper events.
+                await textarea.fill(prompt)
                 await self._check_disconnect(
                     check_client_disconnected, "After Input Fill"
                 )
diff --git a/config/selectors.py b/config/selectors.py
index 1d90d33..3c57d43 100644
--- a/config/selectors.py
+++ b/config/selectors.py
@@ -23,6 +23,7 @@
 # Submit button: prioritize primary submit button in prompt area
 SUBMIT_BUTTON_SELECTOR = (
     # Current UI structure
+    "button.ctrl-enter-submits, "
     'ms-run-button button[type="submit"].ms-button-primary, '
     'ms-run-button button[type="submit"], '
     # Legacy selectors
@@ -296,3 +297,4 @@
     'mat-dialog-container button:has-text("Cancel"), '
     'mat-mdc-dialog-container button:has-text("Cancel")'
 )
+