In fields, autocomplete proposes irrelevant entries from *other* sites

Description of the issue:

The autocomplete popup in fields (not address bar) proposes irrelevant suggestions from completely different sites. Here is a screenshot showing a popup containing previous entries to my github page, here triggered from clicking on the a search field - but this site has nothing to do with github!

Here is another example (where the popup also annoyingly blocks the select options)

image

How can this issue be reproduced?

I would guess the issue can be consistently reproduced if fields use the same name attribute. I have noted this for some sites using the inspector tool. But maybe there are other ways.

Expected result:
The popup and its suggested entries should only show for the site that the entries were entered to begin with.

Brave Version( check About Brave):
This is not a new issue but

Additional Information:
Win 11

nobody?