When I create or modify something (create a rectangle, create a line...) it becomes invisible, but when I do anything it appears. I do not understand why? Someone help me?!
Could you please post a screenshot of the Layers panel as well?
Also, Which version of Photoshop are you using. A similar issue was fixed in our latest release. See Photoshop: Disappearing strokes in paths/shapes | Photoshop Family Customer Community
When you create your path, are you saving it each time. If I follow your video, mine does the same thing when I create a new shape. If I save each one than is reacts normally.
What if you change your Workspace by going to Windows > Workspace > then select a different Workspace like Painting or something? Maybe by altering the Workspace it will change the view. What Workspace are you set at now?