diff --git a/sanic/app.py b/sanic/app.py
index a02b40fa..cf4807d0 100644
--- a/sanic/app.py
+++ b/sanic/app.py
@@ -63,9 +63,14 @@ class Sanic:
             frame_records = stack()[1]
             name = getmodulename(frame_records[1])
         # Check for unsupported function on custom request objects
-        if request_class and any(hasattr(request_class, m) for m in (
-            "body_init", "body_push", "body_finish"
-        )) and request_class.receive_body is Request.receive_body:
+        if (
+            request_class
+            and any(
+                hasattr(request_class, m)
+                for m in ("body_init", "body_push", "body_finish")
+            )
+            and request_class.receive_body is Request.receive_body
+        ):
             raise NotImplementedError(
                 "Request methods body_init, body_push and body_finish "
                 f"are no longer supported. {request_class!r} should "
diff --git a/sanic/compat.py b/sanic/compat.py
index 4e4094be..99e0127e 100644
--- a/sanic/compat.py
+++ b/sanic/compat.py
@@ -5,11 +5,11 @@ from multidict import CIMultiDict  # type: ignore
 
 
 try:
-    from trio import Cancelled
+    from trio import Cancelled  # type: ignore
 
-    CancelledErrors = CancelledError, Cancelled
+    CancelledErrors = [CancelledError, Cancelled]
 except ImportError:
-    CancelledErrors = (CancelledError,)
+    CancelledErrors = [CancelledError]
 
 
 class Header(CIMultiDict):
diff --git a/sanic/http.py b/sanic/http.py
index 6049d3b8..8aaa4aa0 100644
--- a/sanic/http.py
+++ b/sanic/http.py
@@ -179,7 +179,7 @@ class Http:
         self.stage = Stage.HANDLER
         self.request = request
 
-    async def http1_response_header(self, data, end_stream) -> bytes:
+    async def http1_response_header(self, data, end_stream):
         res = self.response
         # Compatibility with simple response body
         if not data and getattr(res, "body", None):
@@ -244,22 +244,22 @@ class Http:
             self.response_func = None
             self.stage = Stage.IDLE
 
-    async def http1_response_chunked(self, data, end_stream) -> bytes:
+    async def http1_response_chunked(self, data, end_stream):
         """Format a part of response body in chunked encoding."""
         # Chunked encoding
         size = len(data)
         if end_stream:
             await self._send(
                 b"%x\r\n%b\r\n0\r\n\r\n" % (size, data)
-                if size else
-                b"0\r\n\r\n"
+                if size
+                else b"0\r\n\r\n"
             )
             self.response_func = None
             self.stage = Stage.IDLE
         elif size:
             await self._send(b"%x\r\n%b\r\n" % (size, data))
 
-    async def http1_response_normal(self, data: bytes, end_stream: bool) -> bytes:
+    async def http1_response_normal(self, data: bytes, end_stream: bool):
         """Format / keep track of non-chunked response."""
         bytes_left = self.response_bytes_left - len(data)
         if bytes_left <= 0:
diff --git a/sanic/request.py b/sanic/request.py
index e211629c..bc7a548b 100644
--- a/sanic/request.py
+++ b/sanic/request.py
@@ -132,24 +132,17 @@ class Request:
             )
         return response
 
-    async def receive_body(self):
-        self.body = b"".join([data async for data in self.stream])
-
     async def receive_body(self):
         """Receive request.body, if not already received.
 
-        Streaming handlers may call this to receive the full body.
+        Streaming handlers may call this to receive the full body. Sanic calls
+        this function before running any handlers of non-streaming routes.
 
-        This is added as a compatibility shim in Sanic 20.3 because future
-        versions of Sanic will make all requests streaming and will use this
-        function instead of the non-async body_init/push/finish functions.
-
-        Please make an issue if your code depends on the old functionality and
-        cannot be upgraded to the new API.
+        Custom request classes can override this for custom handling of both
+        streaming and non-streaming routes.
         """
-        if not self.stream:
-            return
-        self.body = b"".join([data async for data in self.stream])
+        if not self.body:
+            self.body = b"".join([data async for data in self.stream])
 
     @property
     def json(self):