Whenever i go to window capture something it captures more than the window. Say i have program opened but not maximized. i go to take a window capture. it captures the window AND parts of my desktop. Same with capturing one of my monitors. I run Two monitors and say i want to capture something on my main monitor. it will capture both monitors even though i only wanted to Window capture one monitor. I included two screenshots both of which are taken using Window Capture.
We have over a million users who use Greenshot on Windows 10, without having this problem. So it's unlikely that it's a generic Greenshot bug and I need to assume this bug is due to something special with your setup.
Please let me know the following:
Greenshot version, if this is really 1.2.9.x please update to the most recent by downloading from here: http://getgreenshot.org/downloads
Your Windows 10 version, are you using an insider build?
All tools you are using, like desktop manager etc. Also what is that you are using on the screenshot?
Does this always happen, or only when certain applications are running?
Your DPI settings
Are you running Greenshot in a compatibility mode? Or as a different user (e.g. admin)?