Instead I had to manually press the 'Back' button and I could only assume the action had completed successfully. I also find the new GUI to be a bit confusing not really letting me know when an action has been completed.in this case moving the suspected file to the virus chest. I decided to move the file to the chest thinking I might want to investigate it further and it looked like Avast! was able to successfully carry out the action I asked for but when I later checked my virus chest it was empty?! The file triggering the alert was a file in my recycle bin called $ROM093N.adi where the threat reported was Win32:Hupigon-ONX.
Today I had an issue reported as well and not sure if it was a false positive or not. Here's a screenshot of that scan but a bit hard to see due to the bad 4K scaling in Avast. However I didn't use the files affected anymore so I decided to delete them just to make sure. The first time I noticed this on the 17'th of Feb a number of issues were reported of which I'm certain they were all false positives.