Privacy Browser

I'm not sure I fully understand what let to the attached screenshot. What app are you in, and what option did you select, that led to that screenshot?

The situation is: no app opened at all, I just open my list of contacts on the phone, then I go on a contact and see as in the picture.

If I actually try to follow PB in opening, for example, a call on Telegram it shows:
"Impossible to load the web page at content://com.android.contacts/data/6864 since: net::ERR_FILE_NOT_FOUND"

I didn't make any setting for PB.

Privacy Browser can read any data shared via a content URL with a VIEW intent. This lets it open text files, pictures, and other things. There is a bit of information about this at https://www.stoutner.com/privacy-browser-3-8/. You can see the intent filter in the Manifest beginning at line 130.

https://gitweb.stoutner.com/?p=PrivacyBrowser.git;a=blob;f=app/src/main/AndroidManifest.xml;h=2fc80d8992d243cb04ce7169c61c33bfa6435a33;hb=HEAD

However, I am not able to replicate your behavior. For example, if I open the contacts on my phone (Google's default Contacts app), go to a contact, and select share from the menu, Privacy Browser is not listed as an option. This is most likely because Contacts is not using a VIEW intent, but a different intent that matches the behavior it is looking for. Are you perhaps using a custom contacts app? Could you post a video showing the behavior?

If you can't post a video, a precise description of each step, with the version number of the contact app you are using, would be helpful.