Why is the Format parameter inside my upload-preset being ignored?

Within Upload-Presets, when specifying both the Allowed-formats and Format parameters, the semantics of these fields change. 

Normal Behavior (Without Both Parameters):

• By default, Allowed-formats is not specified. Any uploaded file format (e.g., JPG, PNG, PDF) is allowed.
• Format can be used to define a specific output format for all uploaded files. For example, if Format is set to jpg, all uploads (regardless of their original format) will be converted to JPG upon upload.

Changed Behavior (With Both Parameters):

• When you define both Allowed-formats and Format, their usual roles change.
• Allowed-formats becomes a whitelist, specifying the only file formats that will be accepted for upload. Any format not listed in Allowed-formats will be rejected.
• Format now applies only to files whose formats are not included in the Allowed-formats list. These non-allowed formats will be converted to the format specified in Format.
• Files with formats included in the Allowed-formats list will be uploaded and stored without modification, preserving their original format.

In essence:

• Allowed-formats acts as a filter, controlling which file types can be uploaded.
• Format (when used with Allowed-formats) defines the conversion target format for non-allowed file types. Allowed formats remain unchanged.