Faded black spot in recordings

[G284L]

Ever since the last firmware update 9.0 I have noticed in the lower middle of the screen a black faded spot in all my recordings, however not when I take pictures. I have cleaned lens and filters with the same result. Wondering if anybody else has come across this issue ?

 

[beachcombing]

Can you post a video so we can see what you are talking about?