but it just shows nothing instead of showing the hidden items (like loaders and coins).
Is there a way to show hidden items on a choose-elem-button using filters in some way?
I guess this got moved to modding help but it seems like maybe a feature request if it's not a "bug".
One solution is to change the item to be not hidden, but then what is the point of the elem_filter flags in this case?
To be sure I understood this correctly. You want a "hidden" item that would not be shown in this GUI normally, to be shown on the button if you filter to only show items with that filter?
If yes, then I would move this to api request if you want that.