Autofill in chrome using Autofill Service Android

In Pie & Above versions, Android introduced the chrome browser autofill using the Autofill service as per the doc.

But i tried debug the Facebook's login form in Chrome Browser for the onFillRequest call to come. But it's not coming. Don't know anything else i need to add in code or permissions.

But in apps like Facebook, i am getting onFillRequest call is coming. For browsers only it has problem.

Device Name: Pixel 3

I have checked in Dashlane also.

Dashlane Scnario:

I have seen a news that Dashlane integrated the Autofill for chrome using Autofill Service. I have installed the app and tried it. It still uses accessibility service to fill the form. I have latest chrome browser and dashlane app.

Could you please help me top find an issue for browser's autofill using Autofill Service.

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