[False Positive, Neshta.Virus.FileInfector.DDS]

Triggered today on an 2020 dated version that hadn't been reported before, so went online and downloaded the most current version from https://www.techspot.com/downloads/5954-filemenu-tools.html with same results.  Web sites are geniune and declare clean downloads.

FileMenuTools-portable.zip MWareFalse.txt

[Malwarebytes Browser Guard extension 2.2.18 blocks Facebook Contacts]

Update to my report of this problem on the 17th.

I re-enabled my browser guard intending to turn it off when I was going into Facebook.  Forgot to do that this morning and I noticed in "Share" option of Facebook that it now had an option of "Share now (Custom)" which didn't recognize so I used another option.

Anyway I then noticed that my Contacts list was displayed as usual.  I was concerned that I had left the browser guard disabled but it showed the normal blue M icon.  I double checked and it was on with Facebooks loaded and all protections enabled.  I checked the guard version and it was still on V 2.2.18 and had not Vivaldi updates or Windows.  Perhaps Facebook has been rolling out changes (Custom share?) and I got the changes.
 

[Malwarebytes Browser Guard extension 2.2.18 blocks Facebook Contacts]

For my 2 cents worth.  Been trying everything to fix this "no contacts list" for days thinking it was a Vivaldi issue until I turned off all extensions and when Malwarebytes Browser Guard was activated the issue would return.  After seeing these post I noticed I had an Facebook sign-in option of switching users (didn't know that) but when I switched to my wife's Facebook the issue wasn't created.  Switched back and my contacts were missing again.  Immediately suspected some page layout or feature I may have played with but couldn't find anything that would affect the issue.  Will wait until 2.20 is released before testing any further.