Viewport blocking the view on VR edit mode.

Hi all!

I am creating a Virtual Production sequence editable in VR. Somehow I manage to open a cinematic viewport in the VR edit mode that covers 80% of the VR view.
I was making test with the sequencer but now I´ve spent 5 hours trying to fix this and I am quite desperate. Any Idea of how to close this viewport and recover the default setting of the VR edit mode?

I attached a video for more clarity: