Don't copy scopes from parent span

synapse/logging/context.py

@@ -367,15 +367,11 @@ class LoggingContext(object):
         # we track the current request
         record.request = self.request
 
-        # we also track the current scope:
-        record.scope = self.scope
-
     def copy_to_twisted_log_entry(self, record) -> None:
         """
         Copy logging fields from this context to a Twisted log record.
         """
         record["request"] = self.request
-        record["scope"] = self.scope
 
     def start(self, rusage: "Optional[resource._RUsage]") -> None:
         """

synapse/logging/scopecontextmanager.py

@@ -50,7 +50,12 @@ class LogContextScopeManager(ScopeManager):
             available.
         """
         ctx = current_context()
-        return ctx.scope
+        while ctx:
+            if ctx.scope:
+                return ctx.scope
+            ctx = ctx.parent_context
+
+        return None
 
     def activate(self, span, finish_on_close):
         """