diff --git a/reflex/config.py b/reflex/config.py
index b3dc1b5474f..086b819939e 100644
--- a/reflex/config.py
+++ b/reflex/config.py
@@ -237,7 +237,7 @@ class BaseConfig:
     env_file: str | None = None
 
     # Whether to automatically create setters for state base vars
-    state_auto_setters: bool = True
+    state_auto_setters: bool | None = None
 
     # Whether to display the sticky "Built with Reflex" badge on all pages.
     show_built_with_reflex: bool | None = None
diff --git a/reflex/state.py b/reflex/state.py
index 908ac30a241..663bfe2645c 100644
--- a/reflex/state.py
+++ b/reflex/state.py
@@ -225,8 +225,20 @@ def __call__(self, *args: Any) -> EventSpec:
             EventHandlerValueError: If the given Var name is not a str
             NotImplementedError: If the setter for the given Var is async
         """
+        from reflex.config import get_config
         from reflex.utils.exceptions import EventHandlerValueError
 
+        config = get_config()
+        if config.state_auto_setters is None:
+            console.deprecate(
+                feature_name="state_auto_setters defaulting to True",
+                reason="The default value will be changed to False in a future release. Set state_auto_setters explicitly or define setters explicitly. "
+                f"Used {self.state_cls.__name__}.setvar without defining it.",
+                deprecation_version="0.8.9",
+                removal_version="0.9.0",
+                dedupe=True,
+            )
+
         if args:
             if not isinstance(args[0], str):
                 msg = f"Var name must be passed as a string, got {args[0]!r}"
@@ -1036,7 +1048,7 @@ def _init_var(cls, name: str, prop: Var):
             )
             raise VarTypeError(msg)
         cls._set_var(name, prop)
-        if cls.is_user_defined() and get_config().state_auto_setters:
+        if cls.is_user_defined() and get_config().state_auto_setters is not False:
             cls._create_setter(name, prop)
         cls._set_default_value(name, prop)
 
@@ -1096,11 +1108,14 @@ def _set_var(cls, name: str, prop: Var):
         setattr(cls, name, prop)
 
     @classmethod
-    def _create_event_handler(cls, fn: Any):
+    def _create_event_handler(
+        cls, fn: Any, event_handler_cls: type[EventHandler] = EventHandler
+    ):
         """Create an event handler for the given function.
 
         Args:
             fn: The function to create an event handler for.
+            event_handler_cls: The event handler class to use.
 
         Returns:
             The event handler.
@@ -1108,7 +1123,7 @@ def _create_event_handler(cls, fn: Any):
         # Check if function has stored event_actions from decorator
         event_actions = getattr(fn, "_rx_event_actions", {})
 
-        return EventHandler(
+        return event_handler_cls(
             fn=fn, state_full_name=cls.get_full_name(), event_actions=event_actions
         )
 
@@ -1125,9 +1140,34 @@ def _create_setter(cls, name: str, prop: Var):
             name: The name of the var.
             prop: The var to create a setter for.
         """
+        from reflex.config import get_config
+
+        config = get_config()
+        _create_event_handler_kwargs = {}
+
+        if config.state_auto_setters is None:
+
+            class EventHandlerDeprecatedSetter(EventHandler):
+                def __call__(self, *args, **kwargs):
+                    console.deprecate(
+                        feature_name="state_auto_setters defaulting to True",
+                        reason="The default value will be changed to False in a future release. Set state_auto_setters explicitly or define setters explicitly. "
+                        f"Used {setter_name} in {cls.__name__} without defining it.",
+                        deprecation_version="0.8.9",
+                        removal_version="0.9.0",
+                        dedupe=True,
+                    )
+                    return super().__call__(*args, **kwargs)
+
+            _create_event_handler_kwargs["event_handler_cls"] = (
+                EventHandlerDeprecatedSetter
+            )
+
         setter_name = Var._get_setter_name_for_name(name)
         if setter_name not in cls.__dict__:
-            event_handler = cls._create_event_handler(prop._get_setter(name))
+            event_handler = cls._create_event_handler(
+                prop._get_setter(name), **_create_event_handler_kwargs
+            )
             cls.event_handlers[setter_name] = event_handler
             setattr(cls, setter_name, event_handler)
 
diff --git a/reflex/utils/console.py b/reflex/utils/console.py
index d33eef62ed3..9c25b3a1d00 100644
--- a/reflex/utils/console.py
+++ b/reflex/utils/console.py
@@ -7,6 +7,7 @@
 import inspect
 import os
 import shutil
+import sys
 import time
 from pathlib import Path
 from types import FrameType
@@ -244,23 +245,38 @@ def warn(msg: str, *, dedupe: bool = False, **kwargs):
         print_to_log_file(f"[orange1]Warning: {msg}[/orange1]", **kwargs)
 
 
-def _get_first_non_framework_frame() -> FrameType | None:
+@once
+def _exclude_paths_from_frame_info() -> list[Path]:
+    import importlib.util
+
     import click
+    import granian
+    import socketio
     import typing_extensions
 
     import reflex as rx
 
     # Exclude utility modules that should never be the source of deprecated reflex usage.
-    exclude_modules = [click, rx, typing_extensions]
+    exclude_modules = [click, rx, typing_extensions, socketio, granian]
+    modules_paths = [file for m in exclude_modules if (file := m.__file__)] + [
+        spec.origin
+        for m in [*sys.builtin_module_names, *sys.stdlib_module_names]
+        if (spec := importlib.util.find_spec(m)) and spec.origin
+    ]
     exclude_roots = [
         p.parent.resolve() if (p := Path(file)).name == "__init__.py" else p.resolve()
-        for m in exclude_modules
-        if (file := m.__file__)
+        for file in modules_paths
     ]
     # Specifically exclude the reflex cli module.
     if reflex_bin := shutil.which(b"reflex"):
         exclude_roots.append(Path(reflex_bin.decode()))
 
+    return exclude_roots
+
+
+def _get_first_non_framework_frame() -> FrameType | None:
+    exclude_roots = _exclude_paths_from_frame_info()
+
     frame = inspect.currentframe()
     while frame := frame and frame.f_back:
         frame_path = Path(inspect.getfile(frame)).resolve()
@@ -297,13 +313,13 @@ def deprecate(
         filename = Path(origin_frame.f_code.co_filename)
         if filename.is_relative_to(Path.cwd()):
             filename = filename.relative_to(Path.cwd())
-        loc = f"{filename}:{origin_frame.f_lineno}"
+        loc = f" ({filename}:{origin_frame.f_lineno})"
         dedupe_key = f"{dedupe_key} {loc}"
 
     if dedupe_key not in _EMITTED_DEPRECATION_WARNINGS:
         msg = (
             f"{feature_name} has been deprecated in version {deprecation_version}. {reason.rstrip('.').lstrip('. ')}. It will be completely "
-            f"removed in {removal_version}. ({loc})"
+            f"removed in {removal_version}.{loc}"
         )
         if _LOG_LEVEL <= LogLevel.WARNING:
             print(f"[yellow]DeprecationWarning: {msg}[/yellow]", **kwargs)
diff --git a/reflex/vars/base.py b/reflex/vars/base.py
index 020d09aea05..e884fab23cb 100644
--- a/reflex/vars/base.py
+++ b/reflex/vars/base.py
@@ -930,6 +930,7 @@ def _get_setter(self, name: str) -> Callable[[BaseState, Any], None]:
         Returns:
             A function that that creates a setter for the var.
         """
+        setter_name = Var._get_setter_name_for_name(name)
 
         def setter(state: Any, value: Any):
             """Get the setter for the var.
@@ -951,7 +952,7 @@ def setter(state: Any, value: Any):
 
         setter.__annotations__["value"] = self._var_type
 
-        setter.__qualname__ = Var._get_setter_name_for_name(name)
+        setter.__qualname__ = setter_name
 
         return setter
 
diff --git a/tests/integration/test_connection_banner.py b/tests/integration/test_connection_banner.py
index c50a69e9474..6ff246cadfa 100644
--- a/tests/integration/test_connection_banner.py
+++ b/tests/integration/test_connection_banner.py
@@ -22,6 +22,10 @@ def ConnectionBanner():
     class State(rx.State):
         foo: int = 0
 
+        @rx.event
+        def set_foo(self, foo: int):
+            self.foo = foo
+
         @rx.event
         async def delay(self):
             await asyncio.sleep(5)
@@ -33,7 +37,7 @@ def index():
             rx.button(
                 "Increment",
                 id="increment",
-                on_click=State.set_foo(State.foo + 1),  # pyright: ignore [reportAttributeAccessIssue]
+                on_click=State.set_foo(State.foo + 1),
             ),
             rx.button("Delay", id="delay", on_click=State.delay),
         )
diff --git a/tests/integration/test_exception_handlers.py b/tests/integration/test_exception_handlers.py
index 6430bc746a6..08c19415d95 100644
--- a/tests/integration/test_exception_handlers.py
+++ b/tests/integration/test_exception_handlers.py
@@ -28,6 +28,10 @@ class TestAppState(rx.State):
 
         react_error: bool = False
 
+        @rx.event
+        def set_react_error(self, value: bool):
+            self.react_error = value
+
         def divide_by_number(self, number: int):
             """Divide by number and print the result.
 
@@ -54,7 +58,7 @@ def index():
             ),
             rx.button(
                 "induce_react_error",
-                on_click=TestAppState.set_react_error(True),  # pyright: ignore [reportAttributeAccessIssue]
+                on_click=TestAppState.set_react_error(True),
                 id="induce-react-error-btn",
             ),
             rx.box(
diff --git a/tests/integration/test_lifespan.py b/tests/integration/test_lifespan.py
index aa164281b8e..aadbf3fdc75 100644
--- a/tests/integration/test_lifespan.py
+++ b/tests/integration/test_lifespan.py
@@ -53,6 +53,10 @@ async def lifespan_task(inc: int = 1):
     class LifespanState(rx.State):
         interval: int = 100
 
+        @rx.event
+        def set_interval(self, interval: int):
+            self.interval = interval
+
         @rx.var(cache=False)
         def task_global(self) -> int:
             return lifespan_task_global
@@ -73,7 +77,7 @@ def index():
                 rx.moment(
                     interval=LifespanState.interval, on_change=LifespanState.tick
                 ),
-                on_click=LifespanState.set_interval(  # pyright: ignore [reportAttributeAccessIssue]
+                on_click=LifespanState.set_interval(
                     rx.cond(LifespanState.interval, 0, 100)
                 ),
                 id="toggle-tick",