In regard to Vasily's answer to use MudInput instead of MudTextField,

MudInput does address autocomplete issue but currently MudInput will not render correctly Input in MudItem is not filling whole width #6341

I tried other solutions such as adding 'autocomplete="off"', 'autocomplete="false"' and 'autocomplete="host-ip"' but none of those options change the autocomplete behavior of Edge. I have not tried other browsers as if it does not work for Edge, it is not a complete solution.

So, for now it seems like I am stuck with either a) incorrect options showing up in autocomplete or b) inconsistent rendering.