final fix

Author: szczekulskij

pandas/core/groupby/groupby.py

@@ -1308,7 +1308,7 @@ def _wrap_applied_output(
         values: list,
         not_indexed_same: bool = False,
         is_transform: bool = False,
-        skip_as_index: bool = True,
+        skip_as_index: bool = False,
     ):
         raise AbstractMethodError(self)
 

pandas/core/resample.py

@@ -1370,7 +1370,7 @@ def func(x):
             target_category=FutureWarning,
             new_message=msg,
         ):
-            result = self._groupby.apply(func, skip_as_index=False)
+            result = self._groupby.apply(func, skip_as_index=True)
         return self._wrap_result(result)
 
     _upsample = _apply

pandas/tests/groupby/test_apply.py

@@ -1444,7 +1444,9 @@ def test_apply_nonmonotonic_float_index(arg, idx):
     tm.assert_frame_equal(result, expected)
 
 
-@pytest.mark.parametrize("args, kwargs", [([True], {}), ([], {"numeric_only": True})])
+@pytest.mark.parametrize(
+    "args, kwargs", [([False, True], {}), ([], {"numeric_only": True})]
+)
 def test_apply_str_with_args(df, args, kwargs):
     # GH#46479
     gb = df.groupby("A")