youtube is dissabeling video clips, when selectinf Play in a new window, or display in a side window the clip is greyed out ad refuses to play

While Using Youtube : from the starting page (that comes up with multiple Clips displayed), I attempt to do the following: By selecting Open Link in a new tab, or Open Link in Split View (So I can Watch a specific clip without loosing the original displayed clips on the starting "face Page") ...the selected Opened Link Immediately Becomes Greyed Out And Refuses to Play the the Clip. To watch that clip I must close the video clip that I selected to then return to the original opening page to then Move the pointer back over the smaller box-clip that I want to watch, leaving the pointer on that clip is the only way to watch the clip. This Just Started Happening Recently...... This is Happening Every time..... Apparently, if you want to watch ANY of the displayed clips from a Start "Face Page" you can Only watch by hovering the mouse pointer on that specific Small Box Clip on the starting page...I can't bookmark that page without selecting the page to another Face Page, which then looses the smaller multiple clips on the original face page that I started on.