Here's the latest update that I passed along to Avast:
"I did a new install of the Secure Browser, updated it to the latest version, rebooted the system. Bank Mode if opened from the Avast tray icon opens properly but I still can't select the notepad.exe that I added to the Bank Mode. However, opening Bank Mode from the three dot menu in the Secure Browser still gives me the blank screen as shown in the photo I posted in my last reply."
When I get a reply from Avast, I'll pass along the information.