Thanks for sharing the screenshot. From the picture, I can not tell if there are any filters applied to your top video track. Also, I can not tell if there are filters applied to the clip that is under the playhead (the playhead is scrolled off of the screen). Can you share another screenshot with more of the timeline in view?
Also, it is possible that you might be experiencing this bug:
You can check the “blend mode” in the properties panel for Track V2.