Desktop ghosting during presentation

[tsmith171]

When we have people presenting in teams, we sometimes see their desktop ghosting into the presentation.  We will see outlines of the desktop in a word document that they are presenting.  This is really noticeable when the screen is white, the images are very faint and hard to capture with camera to show a picture of this issue.  I am wondering if others have seen this and what is a good way to explain this to none technical people. 

[#2]

@tsmith171 sounds weird, can you record a meeting and see it?

Maybe some kind of video driver issue? Is it when the share a screen or a specific app?

[#3]

@Steven Collier   It is in a conference room on the large TV screens.  It is powered by teleconference communication hardware, no real PC.  It only happens sometimes, and is most noticable when the screens are white and an application like xcel, word, or others is shared by a remote user.  This does not happen