Hi!
Thank you for the report!
Can you please send me your diagnostics info, because i cannot reproduce this bug.
1. Open the browser and click on the menu icon (3 dots)
2. Click on "Help and About Avast Secure Browser" and then "About Avast Secure Browser"
3. Click on "Diagnostic Information" (this will open a pop-up window)
4. Click the "COPY TO CLIPBOARD" button to capture the information and paste it here.
Thank you!