23.5.0 Adjustment Layer prohibits scale keyframes

I have an adjustment layer in the timeline hovering over video.  The only effect (so far) in my adjustment layer is Lumetri Vignette.  I tried to do some simple scale keyframes (slow zoom in) on the video itself (not the adjustment layer) but they are ignored and/or behave oddly.  I found that if I remove the adjustment layer, the scaling effect works.  Obviously this is undesirable.