Hi Christopher,
Thanks for the update,
We have checked with your reported issue, and we are unable to reproduce the issue in our end. We can able to type # key in input box (Hex field), So can you please provide more information about your issue or provide more detail to reproduce the issue in our end (Like Browser, EJ Product version etc.,). This will help us to check and provide the exact solution.
Please let us know if you need any further assitance,
Regards,
Sasikala Nagarajan