UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36

Steps to reproduce the problem:
1. Open a local html/pdf file with a pound character in the name
2. 
3. 

What is the expected behavior?
Opens the file

What went wrong?
"Your file was not found

It may have been moved or deleted.
ERR_FILE_NOT_FOUND"

Did this work before? N/A 

Chrome version: 53.0.2785.143  Channel: stable
OS Version: 10.0
Flash Version: Shockwave Flash 23.0 r0