Screen sharing with speaker video inside the powerpoint

Hello

Me and my friends are running tutoring sessions using zoom and recently found through the recording that my video is showing inside the powerpoint that i am sharing. Is it a bug or is it something related to my zoom setting? I have already updated to the latest version v.5.9.0 and it's still happening.

If you look at the attachment, it's supposed to be showing like image (1). Please help. Thank you!