Gamepad Navigation Issues with Long Dropdown Menus

[CasperH2O]

Handheld Companion Version
0.20.0.1

Describe the bug

Long drop down menus are hard to use with gamepad navigation, hightlight goes out of view when scrolling down.

Can be somewhat circumvented by hitting A, thus selecting the current selection and then reopening the dropdown.

Interesting to note, the main GUI scroll bar and QT scroll bar don't suffer from this problem when navigating down with just gamepad navigation.

See video:

Expected behavior
Perhaps include an additional key button that makes the dropdown viewport also scroll? Not sure. Using either dpad/joystick or physical keyboard up and down arrows the viewport does not scroll along. Using the mouse scrollwheel, the view does go down.

Scroll.webm

[CasperH2O]

Being followed up here: iNKORE-NET/UI.WPF.Modern#61