As shown in the screenshot below, autofill for password is offered for the formula editor, which usually is not appropriate. What makes it worse is that the BB code buttons, hints or errors get blocked by the prompt, resulting in a poor experience.
Tested on HTC U11, Android 8.0.0 with Bitwarden password manager.
I'm also an android developer, and did some quick googling on the Oreo Autofill Framework. Here is what I found that may be useful. There is an attribute "android:importantForAutofill" which can be set to no to disable autofill on that view. But I'm not sure if that always works so you need to test it yourself. Thanks.