Currently we are not aware of such behavior. What comes to my mind is that something in the specific setup leads to the wrong behavior, so any additional information would be appreciated.
In our Material theme, the focus visual when focused is represented by a 3px line under the input.
Do you have the FocusManager.IsFocusScope set somewhere in your application? And how do you manipulate the focus by code? Is it possible something to steal the focus from the PasswordBox?
Looking forward your reply.
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