No vertical tabs on tonight's nightly?

Just updated to 1.47.33. When Brave relaunched, the vertical tabs were gone. I went to about:flags and my Vertical Tabs flag was enabled. Is there something else that I need to check or is this a bug?

N/m, see this for the solution: Vertical Tabs Not Working As Of Version 1.47.33 - #2 by Mattches