[Windows] Fix subfolder config.json silently skipped during download

src/diffusers/pipelines/pipeline_flax_utils.py

@@ -336,7 +336,7 @@ def from_pretrained(cls, pretrained_model_name_or_path: str | os.PathLike | None
             )
             # make sure we only download sub-folders and `diffusers` filenames
             folder_names = [k for k in config_dict.keys() if not k.startswith("_")]
-            allow_patterns = [os.path.join(k, "*") for k in folder_names]
+            allow_patterns = [f"{k}/*" for k in folder_names]
             allow_patterns += [FLAX_WEIGHTS_NAME, SCHEDULER_CONFIG_NAME, CONFIG_NAME, cls.config_name]
 
             ignore_patterns = ["*.bin", "*.safetensors"] if not from_pt else []

src/diffusers/pipelines/pipeline_utils.py

@@ -1738,7 +1738,7 @@ def download(cls, pretrained_model_name, **kwargs) -> str | os.PathLike:
             # add custom pipeline file
             allow_patterns += [f"{custom_pipeline}.py"] if f"{custom_pipeline}.py" in filenames else []
             # also allow downloading config.json files with the model
-            allow_patterns += [os.path.join(k, "config.json") for k in model_folder_names]
+            allow_patterns += [f"{k}/config.json" for k in model_folder_names]
             allow_patterns += [
                 SCHEDULER_CONFIG_NAME,
                 CONFIG_NAME,