Avast Scheduling

On several computers here at home, I have Avast Free Antivirus Installed.I configured the program to automatically run a full virus scan, each night.Each morning I check the computers, it shows that Avast did a 99% scan, and then is has a Detail button.When I click the button, it starts, the scan all over again.But when I check the scan history, it shows the results as though it was completed.I have uninstalled and reinstalled the program twice, and it does the same thing…Any comments please??

Please (re)search before posting.
It is a known bug.

And next time post in the correct forum > https://forum.avast.com/index.php?board=2.0

I configured the program to automatically run a [b]full virus scan, each night[/b]
There is no need for this frequent scan

All AV (with one exception) have realtime protection/monitoring, meaning evrything that goes on in your computer when it is on is checked/scanned by your antivirus in realtime

[b]Real-time protection[/b] Real-time protection, on-access scanning, background guard, resident shield, autoprotect, and other synonyms refer to the automatic protection provided by most antivirus, anti-spyware, and other anti-malware programs. This monitors computer systems for suspicious activity such as computer viruses, spyware, adware, and other malicious objects in 'real-time', in other words while data loaded into the computer's active memory: when inserting a CD, opening an email, or browsing the web, or when a file already on the computer is opened or executed