I tried to reproduce your issue, but I couldn't. I could open a pdf with # in the name from command line, from nautilus and from File|Open.
My version: evince: Installed: 2.30.0-0ubuntu1
I tried to reproduce your issue, but I couldn't. I could open a pdf with # in the name from command line, from nautilus and from File|Open.
My version:
evince:
Installed: 2.30.0-0ubuntu1