Document URL is shown url encoded

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Issue Summary

When pdfviewer opens a document from smb url, the path is shown in url encoded form:

I am not sure if this is an issue with pdfviewer plus or the file manager I am using.

Steps to Reproduce the Problem

Use Material Files app to open pdf document from smb share.
https://github.com/zhanghai/MaterialFiles

Specifications

• App Version: 3.7
• Android Version: 10