`split_before_first_argument` breaks `split_all_top_level_comma_separated_values` but not `split_all_comma_separated_values`

Consider the file `test.py`:

def foo():
long_function(long_argument_name_1, long_argument_name_2, long_argument_name_3)

By themselves, the following styles do the same thing, as expected:

$ yapf --style '{split_all_comma_separated_values: True}' test.py

def foo():
long_function(long_argument_name_1,
long_argument_name_2,
long_argument_name_3)

$ yapf --style '{split_all_top_level_comma_separated_values: True}' test.py

def foo():
long_function(long_argument_name_1,
long_argument_name_2,
long_argument_name_3)

But adding the style `split_before_first_argument: True` breaks the `top_level` version only. I would expect the first output in both cases:

$ yapf --style '{split_all_comma_separated_values: True, split_before_first_argument: True}' test.py

def foo():
long_function(
long_argument_name_1,
long_argument_name_2,
long_argument_name_3)

$ yapf --style '{split_all_top_level_comma_separated_values: True, split_before_first_argument: True}' test.py

def foo():
long_function(
long_argument_name_1, long_argument_name_2, long_argument_name_3)