Sequencer disable auto thumbnails in Content Drawer

When I’m working on my Sequencer shots I normally split Unreal viewport in two, one of them with the camera shot and another in perspective so I can easily manipulate things.

Problem is that Unreal likes to automatically update my sequencer thumbnails and it normally saves the thumb from perspective view and I end up having to open the Sequencer only to activate the camera view and manually recapture.

Is there any way to prevent the annoying automatically thumbnail generation?

Thank you