diff --git a/isort/parse.py b/isort/parse.py
index 714e39ab..2a15c90f 100644
--- a/isort/parse.py
+++ b/isort/parse.py
@@ -293,6 +293,7 @@ def file_contents(contents: str, config: Config = DEFAULT_CONFIG) -> ParsedConte
             else:
                 while line.strip().endswith("\\"):
                     line, new_comment = parse_comments(in_lines[index])
+                    line = line.lstrip()
                     index += 1
                     if new_comment:
                         comments.append(new_comment)

diff --git a/tests/unit/test_isort.py b/tests/unit/test_isort.py
index 7a02884b..8f0368d7 100644
--- a/tests/unit/test_isort.py
+++ b/tests/unit/test_isort.py
@@ -4095,6 +4095,14 @@ def test_isort_keeps_comments_issue_691() -> None:
     assert isort.code(test_input) == expected_output
 
 
+def test_isort_multiline_with_tab_issue_1714() -> None:
+    test_input = "from sys \\ \n" "\timport version\n" "print(version)\n"
+
+    expected_output = "from sys import version\n" "\n" "print(version)\n"
+
+    assert isort.code(test_input) == expected_output
+
+
 def test_isort_ensures_blank_line_between_import_and_comment() -> None:
     config = {
         "ensure_newline_before_comments": True,

Line break and tab indentation makes wrong fix
`isort` causes odd fixing with import line which contains line berak and tab indentation.

before `isort` (Notice that this code uses Tab indentation, not spaces.)

```py
from sys \
	import version
print(version)
```

after `isort`
```py
from sys import importversion

print(version)
```

expected
```py
from sys import version

print(version)
```

### Versions
- macOS Big Sur 11.2.3
- Python 3.9.4
- isort 5.7.0
tests/unit/test_isort.py::test_isort_multiline_with_tab_issue_1714
tests/unit/test_isort.py::test_happy_path tests/unit/test_isort.py::test_code_intermixed tests/unit/test_isort.py::test_correct_space_between_imports tests/unit/test_isort.py::test_sort_on_number tests/unit/test_isort.py::test_line_length tests/unit/test_isort.py::test_output_modes tests/unit/test_isort.py::test_qa_comment_case tests/unit/test_isort.py::test_length_sort tests/unit/test_isort.py::test_length_sort_straight tests/unit/test_isort.py::test_length_sort_section tests/unit/test_isort.py::test_convert_hanging tests/unit/test_isort.py::test_custom_indent tests/unit/test_isort.py::test_use_parentheses tests/unit/test_isort.py::test_skip tests/unit/test_isort.py::test_skip_with_file_name tests/unit/test_isort.py::test_skip_within_file tests/unit/test_isort.py::test_force_to_top tests/unit/test_isort.py::test_add_imports tests/unit/test_isort.py::test_remove_imports tests/unit/test_isort.py::test_comments_above tests/unit/test_isort.py::test_explicitly_local_import tests/unit/test_isort.py::test_quotes_in_file tests/unit/test_isort.py::test_check_newline_in_imports tests/unit/test_isort.py::test_forced_separate tests/unit/test_isort.py::test_default_section tests/unit/test_isort.py::test_first_party_overrides_standard_section tests/unit/test_isort.py::test_thirdy_party_overrides_standard_section tests/unit/test_isort.py::test_known_pattern_path_expansion tests/unit/test_isort.py::test_force_single_line_imports tests/unit/test_isort.py::test_force_single_line_long_imports tests/unit/test_isort.py::test_force_single_line_imports_and_sort_within_sections tests/unit/test_isort.py::test_titled_imports tests/unit/test_isort.py::test_balanced_wrapping tests/unit/test_isort.py::test_relative_import_with_space tests/unit/test_isort.py::test_multiline_import tests/unit/test_isort.py::test_single_multiline tests/unit/test_isort.py::test_atomic_mode tests/unit/test_isort.py::test_order_by_type tests/unit/test_isort.py::test_custom_lines_after_import_section tests/unit/test_isort.py::test_smart_lines_after_import_section tests/unit/test_isort.py::test_settings_overwrite tests/unit/test_isort.py::test_combined_from_and_as_imports tests/unit/test_isort.py::test_as_imports_with_line_length tests/unit/test_isort.py::test_keep_comments tests/unit/test_isort.py::test_multiline_split_on_dot tests/unit/test_isort.py::test_import_star tests/unit/test_isort.py::test_include_trailing_comma tests/unit/test_isort.py::test_similar_to_std_library tests/unit/test_isort.py::test_correctly_placed_imports tests/unit/test_isort.py::test_auto_detection tests/unit/test_isort.py::test_same_line_statements tests/unit/test_isort.py::test_long_line_comments tests/unit/test_isort.py::test_tab_character_in_import tests/unit/test_isort.py::test_split_position tests/unit/test_isort.py::test_place_comments tests/unit/test_isort.py::test_placement_control tests/unit/test_isort.py::test_custom_sections tests/unit/test_isort.py::test_glob_known tests/unit/test_isort.py::test_sticky_comments tests/unit/test_isort.py::test_zipimport tests/unit/test_isort.py::test_from_ending tests/unit/test_isort.py::test_from_first tests/unit/test_isort.py::test_top_comments tests/unit/test_isort.py::test_consistency tests/unit/test_isort.py::test_force_grid_wrap tests/unit/test_isort.py::test_force_grid_wrap_long tests/unit/test_isort.py::test_uses_jinja_variables tests/unit/test_isort.py::test_fcntl tests/unit/test_isort.py::test_import_split_is_word_boundary_aware tests/unit/test_isort.py::test_other_file_encodings tests/unit/test_isort.py::test_encoding_not_in_comment tests/unit/test_isort.py::test_encoding_not_in_first_two_lines tests/unit/test_isort.py::test_comment_at_top_of_file tests/unit/test_isort.py::test_alphabetic_sorting tests/unit/test_isort.py::test_alphabetic_sorting_multi_line tests/unit/test_isort.py::test_comments_not_duplicated tests/unit/test_isort.py::test_top_of_line_comments tests/unit/test_isort.py::test_basic_comment tests/unit/test_isort.py::test_shouldnt_add_lines tests/unit/test_isort.py::test_sections_parsed_correct tests/unit/test_isort.py::test_alphabetic_sorting_no_newlines tests/unit/test_isort.py::test_sort_within_section tests/unit/test_isort.py::test_sort_within_section_case_honored tests/unit/test_isort.py::test_sorting_with_two_top_comments tests/unit/test_isort.py::test_lines_between_sections tests/unit/test_isort.py::test_forced_sepatate_globs tests/unit/test_isort.py::test_no_additional_lines_issue_358 tests/unit/test_isort.py::test_import_by_paren_issue_375 tests/unit/test_isort.py::test_import_by_paren_issue_460 tests/unit/test_isort.py::test_function_with_docstring tests/unit/test_isort.py::test_plone_style tests/unit/test_isort.py::test_third_party_case_sensitive tests/unit/test_isort.py::test_exists_case_sensitive_file tests/unit/test_isort.py::test_exists_case_sensitive_directory tests/unit/test_isort.py::test_sys_path_mutation tests/unit/test_isort.py::test_long_single_line tests/unit/test_isort.py::test_import_inside_class_issue_432 tests/unit/test_isort.py::test_wildcard_import_without_space_issue_496 tests/unit/test_isort.py::test_import_line_mangles_issues_491 tests/unit/test_isort.py::test_import_line_mangles_issues_505 tests/unit/test_isort.py::test_import_line_mangles_issues_439 tests/unit/test_isort.py::test_alias_using_paren_issue_466 tests/unit/test_isort.py::test_long_alias_using_paren_issue_957 tests/unit/test_isort.py::test_strict_whitespace_by_default tests/unit/test_isort.py::test_strict_whitespace_no_closing_newline_issue_676 tests/unit/test_isort.py::test_ignore_whitespace tests/unit/test_isort.py::test_import_wraps_with_comment_issue_471 tests/unit/test_isort.py::test_import_case_produces_inconsistent_results_issue_472 tests/unit/test_isort.py::test_inconsistent_behavior_in_python_2_and_3_issue_479 tests/unit/test_isort.py::test_sort_within_section_comments_issue_436 tests/unit/test_isort.py::test_sort_within_sections_with_force_to_top_issue_473 tests/unit/test_isort.py::test_force_sort_within_sections_with_relative_imports tests/unit/test_isort.py::test_force_sort_within_sections_with_reverse_relative_imports tests/unit/test_isort.py::test_sort_relative_in_force_sorted_sections_issue_1659 tests/unit/test_isort.py::test_reverse_sort_relative_in_force_sorted_sections_issue_1659 tests/unit/test_isort.py::test_correct_number_of_new_lines_with_comment_issue_435 tests/unit/test_isort.py::test_future_below_encoding_issue_545 tests/unit/test_isort.py::test_no_extra_lines_issue_557 tests/unit/test_isort.py::test_long_import_wrap_support_with_mode_2 tests/unit/test_isort.py::test_pylint_comments_incorrectly_wrapped_issue_571 tests/unit/test_isort.py::test_ensure_async_methods_work_issue_537 tests/unit/test_isort.py::test_ensure_as_imports_sort_correctly_within_from_imports_issue_590 tests/unit/test_isort.py::test_ensure_line_endings_are_preserved_issue_493 tests/unit/test_isort.py::test_not_splitted_sections tests/unit/test_isort.py::test_no_lines_before_empty_section tests/unit/test_isort.py::test_no_inline_sort tests/unit/test_isort.py::test_relative_import_of_a_module tests/unit/test_isort.py::test_escaped_parens_sort tests/unit/test_isort.py::test_escaped_parens_sort_with_comment tests/unit/test_isort.py::test_escaped_parens_sort_with_first_comment tests/unit/test_isort.py::test_escaped_no_parens_sort_with_first_comment tests/unit/test_isort.py::test_to_ensure_importing_from_imports_module_works_issue_662 tests/unit/test_isort.py::test_to_ensure_no_unexpected_changes_issue_666 tests/unit/test_isort.py::test_to_ensure_tabs_dont_become_space_issue_665 tests/unit/test_isort.py::test_new_lines_are_preserved tests/unit/test_isort.py::test_forced_separate_is_deterministic_issue_774 tests/unit/test_isort.py::test_monkey_patched_urllib tests/unit/test_isort.py::test_argument_parsing tests/unit/test_isort.py::test_command_line[False] tests/unit/test_isort.py::test_command_line[True] tests/unit/test_isort.py::test_quiet[False] tests/unit/test_isort.py::test_quiet[True] tests/unit/test_isort.py::test_safety_skips[False] tests/unit/test_isort.py::test_safety_skips[True] tests/unit/test_isort.py::test_skip_glob[skip_glob_assert0] tests/unit/test_isort.py::test_skip_glob[skip_glob_assert1] tests/unit/test_isort.py::test_skip_glob[skip_glob_assert2] tests/unit/test_isort.py::test_broken tests/unit/test_isort.py::test_comments_not_removed_issue_576 tests/unit/test_isort.py::test_reverse_relative_imports_issue_417 tests/unit/test_isort.py::test_inconsistent_relative_imports_issue_577 tests/unit/test_isort.py::test_unwrap_issue_762 tests/unit/test_isort.py::test_multiple_as_imports tests/unit/test_isort.py::test_all_imports_from_single_module tests/unit/test_isort.py::test_noqa_issue_679 tests/unit/test_isort.py::test_extract_multiline_output_wrap_setting_from_a_config_file tests/unit/test_isort.py::test_ensure_support_for_non_typed_but_cased_alphabetic_sort_issue_890 tests/unit/test_isort.py::test_to_ensure_empty_line_not_added_to_file_start_issue_889 tests/unit/test_isort.py::test_to_ensure_correctly_handling_of_whitespace_only_issue_811 tests/unit/test_isort.py::test_standard_library_deprecates_user_issue_778 tests/unit/test_isort.py::test_failing_file_check_916 tests/unit/test_isort.py::test_import_heading_issue_905 tests/unit/test_isort.py::test_isort_keeps_comments_issue_691 tests/unit/test_isort.py::test_isort_ensures_blank_line_between_import_and_comment tests/unit/test_isort.py::test_pyi_formatting_issue_942 tests/unit/test_isort.py::test_move_class_issue_751 tests/unit/test_isort.py::test_python_version tests/unit/test_isort.py::test_isort_with_single_character_import tests/unit/test_isort.py::test_isort_nested_imports tests/unit/test_isort.py::test_isort_off tests/unit/test_isort.py::test_isort_split tests/unit/test_isort.py::test_comment_look_alike tests/unit/test_isort.py::test_cimport_support tests/unit/test_isort.py::test_cdef_support tests/unit/test_isort.py::test_top_level_import_order tests/unit/test_isort.py::test_noqa_issue_1065 tests/unit/test_isort.py::test_single_line_exclusions tests/unit/test_isort.py::test_nested_comment_handling tests/unit/test_isort.py::test_comments_top_of_file tests/unit/test_isort.py::test_multiple_aliases tests/unit/test_isort.py::test_parens_in_comment tests/unit/test_isort.py::test_as_imports_mixed tests/unit/test_isort.py::test_no_sections_with_future tests/unit/test_isort.py::test_no_sections_with_as_import tests/unit/test_isort.py::test_no_lines_too_long tests/unit/test_isort.py::test_python_future_category tests/unit/test_isort.py::test_combine_star_comments_above tests/unit/test_isort.py::test_deprecated_settings tests/unit/test_isort.py::test_deprecated_settings_no_warn_in_quiet_mode tests/unit/test_isort.py::test_only_sections tests/unit/test_isort.py::test_combine_straight_imports tests/unit/test_isort.py::test_find_imports_in_code tests/unit/test_isort.py::test_find_imports_in_stream