The signature field preserves information about the time of signing through the TimeOfSigning property of Signature.Properties. However, the DateTime object doesn't keep info about the time zone the document has been signed in. Some customers need to obtain this information.

Image export throws IndexOutOfRangeException decoding JPX images with embedded alpha and MCT;
Adobe renders same PDF. Decode and export correctly, preserving pixels and alpha.

Incorrect character spacing when importing CID fonts with the same BaseFont and different width tables.

Using the PdfStreamSigner to set signature Properties like Name, Location, Reason, and ContactInfo is not respected after export.

Currently the format codes in SpreadStreamprocessing are set formatted according to the the current culture. It would be beneficial to have the option to directly set the invariant format code, the way it would appear in the open XML model.

The customers should have the ability to change the symbol used as a delimiter and the symbol used as a quote for a CSV document.