Dear Glenn,
I suppose that you click on Android Settings -> Language and input -> Default keyboard and then you choose Avast Autofill keyboard and then after a few second Samsung switch the option back to your default keyboard.
It's ok and this is not a bug.
If you have a problem with Autofill, please check these steps:
1) Are you using a supported browser ? Supported browsers are Mobile Google Chrome & Mobile Opera Browser. Unfortunately we can't support new versions of native Samsung Internet Browser.
2) Do you have auto-fill turned on ? (You can check it in the settings in Android Avast Passwords app). If not please follow the steps described here:
https://www.avast.com/faq.php?article=AVKB245 (Step 4: Enable the autofill feature)
Now you should see the overlay icon in supported browsers at pages, which have some login form.
If you still have a problem, please write me a message.
Have a nice day,
Jan from Avast Passwords Team
