Fix scope determination with indirect parameters

Fix #3941

src/_pytest/python.py

@@ -1141,13 +1141,18 @@ def _find_parametrized_scope(argnames, arg2fixturedefs, indirect):
     """
     from _pytest.fixtures import scopes
 
-    indirect_as_list = isinstance(indirect, (list, tuple))
-    all_arguments_are_fixtures = (
-        indirect is True or indirect_as_list and len(indirect) == argnames
-    )
+    if isinstance(indirect, (list, tuple)):
+        all_arguments_are_fixtures = len(indirect) == len(argnames)
+    else:
+        all_arguments_are_fixtures = bool(indirect)
+
     if all_arguments_are_fixtures:
         fixturedefs = arg2fixturedefs or {}
-        used_scopes = [fixturedef[0].scope for name, fixturedef in fixturedefs.items()]
+        used_scopes = [
+            fixturedef[0].scope
+            for name, fixturedef in fixturedefs.items()
+            if name in argnames
+        ]
         if used_scopes:
             # Takes the most narrow scope from used fixtures
             for scope in reversed(scopes):