"Scan Complete, Threat Detected"... but scan history shows "No Virus Found"

[REDACTED]

Occasionally after my daily scan, it will say Scan complete, Threat Detected.  I try to click on the Show Results button which does nothing, so I go to Scan History and there it says No Virus Found.  Does anyone else have this problem?  Is there a threat/virus or not?

[REDACTED]

Hello


Scan with Farbar Recovery Scan Tool

Please download Farbar Recovery Scan Tool and save it to your desktop.

Note: You need to run the version compatibale with your system. If you are not sure which version applies to your system download both of them and try to run them.
Only one of them will run on your system, that will be the right version.

• Double-click to run it. When the tool opens click Yes to disclaimer.
  
• Press Scan button.
  
• It will make a log (FRST.txt) in the same directory the tool is run. Please attach it to your reply.
  
• The first time the tool is run, it makes also another log (Addition.txt). Please attach it to your reply.
  

[Pondus]

it is/was a bug, posted many times

what avast version / build number do you have?