Mixin Autocomplete pop-up floats up and down the page with webpage scrollbar

[newbie newbie]

Hi,
I have a autocomplete mixin. When the list of suggestions pop-up, it
doesn't stay put in one place. If you scroll down the webpage, it will
float down. If you scroll up, it will float up. I want it to stay at my
TextField where the Autocomplete mixin is at.

Here is my tml file

<input t:type="TextField" t:id="emailUpdate" t:mixins="autocomplete"
value="email"/>