diff --git a/upath/tests/implementations/test_s3.py b/upath/tests/implementations/test_s3.py
index 9b57f013..391bd4fb 100644
--- a/upath/tests/implementations/test_s3.py
+++ b/upath/tests/implementations/test_s3.py
@@ -113,3 +113,14 @@ def s3_with_plus_chr_name(s3_server):
             for dir, _, keys in s3.walk(bucket):
                 for key in keys:
                     s3.rm(f"{dir}/{key}")
+
+
+def test_path_with_hash_and_space():
+    assert "with#hash and space" in UPath("s3://bucket/with#hash and space/abc").parts
+
+
+def test_pathlib_consistent_join():
+    b0 = UPath("s3://mybucket/withkey/").joinpath("subfolder/myfile.txt")
+    b1 = UPath("s3://mybucket/withkey").joinpath("subfolder/myfile.txt")
+    assert b0 == b1
+    assert "s3://mybucket/withkey/subfolder/myfile.txt" == str(b0) == str(b1)