I'm not sure if this is a VOXAtc issue, or a OpusFSX issue, but since I first noticed it while using VoxATC, I'll post my question here.

I have a button set up on my yoke that toggles the VOX repsonse window on and off. When I do it, I noticed the other day that a cloud layer disappears when I click it off, and returns when I click it open. I noticed it does it also when I click open the GPS window.

Any ideas what is causing this.

could it be that the button is also some how binded to OpusFSX and you activating some feature there?

that is the 1st thing I would check.

try changing the yoke button to a different one and see if it still does the same.