Streams (including Mikogo, TeamViewer, etc.) - technical aspects.

Are we talking about XSplit? In OBS, the situation is as follows:



That is, when you select Game Capture (similar to Game Source in XSplit), only a black screen is displayed. There are no problems with capturing the "window," but the point is to "only show the game." Meaning, the capture should be only from the window, and not from the area. If you capture based on the "internal content of the window," it is still considered capturing an area, so when the window is minimized, everything behind it will be visible.

However, I think I'm going in the wrong direction with my reasoning; the question wasn't about that.
In short, does Game Source work in XSplit, or does it also show a black window, like in OBS? Does anyone have a licensed/cracked version of XSplit to check this? All the streamers I've watched either capture just the internal part of the window or the full screen, so everything is visible when Alt+Tab is pressed.