There's an issue with Active System Box. Because it's a windows controller, the text is automatically scaled up when adjusting Window's 'Make the text larger or smaller' and setting to 125% or 150%.
This would be fine if it worked well, but in my application, it pushes some text outside the play area and makes other text look cramped.
It's a shame, because there's no alternative to creating 'active text' where you can refer to it by ID and adjust dynamically, so you either have to live with the scaling problem or resort to simple 'Strings' that ignore Windows text scaling but aren't dynamic.
This is a really big issue for application development in Fusion, in my opinion there needs to be some kind of Active Text that operates similar to String but can be assigned IDs, looped through, created at runtime etc.