With the Windows players you will need to match the background so it is the same colour as the Layout you are overlaying. Xibo does not render the background on Android or webOS players only.
Thanks for your reply. Can you explain why the background colour changed from yellow to blue of the logo in the same video? See the overlay with another layout below, at the time 4:50 ?
Windows does not support overlapping Regions so this may be the issue. For example if you have your main layout with nothing where the logo is on your Overlay then it would work, however if you had something underneath it such as a video, it wont work as expected.
Please do share your Layouts so that we can take a look for you.