While using Maya 2019, I switch viewports by holding down the space bar, left clicking and holding on the word "Maya" and moving/hovering my cursor to one of the listed viewport cameras that comes up. Recently, when I hold spacebar and click the word "Maya", nothing happens. I can still press spacebar once to open the 4 viewport view, but I can't switch viewports like the way I used to. I've tried deleting and resetting preferences with no luck. I also tried uninstalling and reinstalling Maya which did not work. Any other ideas on how to fix this issue?