Don’t know if this a Windows issue, or a browser issue, but the F5 key no longer forces a browser window refresh.
I don’t use the ASB, so I can’t speak from personal experience.
Does the F5 key work on other browsers (does on my default browser, Firefox) ?
Were you in Bank Mode at the time as I don’t know if that might have an impact or not ?
Yes F5 works in other browsers, and it used to work in ASB as well. No, I’m not in bank mode.
Hopefully one of the ASB Team can get involved, I will try and draw some attention to this topic.
F5 works as expected for me:
https://d1ka0itfguscri.cloudfront.net/Lh/2023/04/21/21/42/c0frrCVzoSQ/preview.jpg
Alt Shift I should bring up the following:
https://d1ka0itfguscri.cloudfront.net/Lh/2023/04/21/21/48/c0frrJVzoS8/preview.jpg
If not, you can also reach it via the three dot Menu> Help > Report an issue
Fill it out and submit it to Avast.
Thanks for the input Bob.
Helping when possible is what we both enjoy doing. 
Version 112.0.20815.50 (Official Build) (64-bit)
The F5 key does nothing what so ever, here.
If that’s what you see, then something is very definitely off. Standard convention since the introduction of Internet Explorer is for F5 to simply force the displayed web page to reload. Netscape did as well.
Doug
I have no clue what you’re trying to say. The F5 hey works. If it doesn’t work for you, check your extensions or, do a clean install of the Browser.