Unity UI Register Clicks Outside Of Scrollview Mask

I have a drop-down menu that is displayed outside of a ScrollView's Mask component (using an altered shader that ignores the Mask), however, the input is still being blocked outside of the Mask.

How can I enable certain Toggles to be clickable even outside of a particular Mask?

 

why don't you simply remove the mask from the viewport?

 

I would have done that already if I didn't need it.

I'm using a vertical ScrollView to contain multiple elements in a sidebar so need the mask to obviously remove elements further down the list from view.

These elements, however, are clickable with one opening a drop-down menu outside of the mask which I need to be responsive.

 

hmm, okay...
I have an Idea how to solve it, but I actually don't know the exact setup.
I got the idea I have from a problem I recently had where I wanted to have an inverted mask (so that I have a whole in a sprite which can move). I found the solution here: https://answers.unity.com/questions/1066291/invertreverse-ui-mask.html

So, I guess you can do it similar: remove the mask component and use your own mask shader instead. Then all masked objects beneath probably need a special shader as well. The non-masked ones use the default shader, so that they are rendered anyways.
However, this can be tricky if you have a lot of stuff inside (including text). Another problem: you could click the masked objects.

Maybe another approach would be even better, where you put the drop down into another parent outside of the scroll view...

 

The first idea wouldn't work because I don't want objects below the mask outside of the scrollview's view to be selectable as that should work as default. It's just the objects which are displayed on button clicks. I guess they could be put in another parent but then I wouldn't be able to anchor them to the location of the original element.

 

true. you would need a custom script to kind of "anchor" it and set (or even update) the position properly.
That is not an easy task, but it is doable (and I thought about doing it in the past a few times already... but didn't do yet).