Linking items should be masked

Hi!

I recently wanted to mimmick the case of a dialog box with a shaded overlay:

So first of all, it would be great if one of the other suggestions were implemented and we are able to change visibility/other properties of elements based on interaction. Until then I have to copy the artboard and add my dialog box as shown above (some items removed for brevity/confidentiality). This is an acceptable workaround except that the entire dialog box is clickable. Although it's white background is not linked (only the buttons are), it seems that the shaded mask I put behind it, which is linked, is responding when a user clicks on the dialog background (I can confirm this by giving it a different target to anything else on the artboard). I would expect (and hope you can fix XD) such that the unlinked dialog background, covers the mask and clicking on it has no effect.