Okay, here is something that I have found THAT WILL WORK until apple gets this fixed.
1st, as a quick note - for apple, when you go to Commands > Customize and search lift here is what you will read Lift metadata & adjustments says shift+command+c (copy)
and stamp is shift+command+v (paste). ?
NOW . . . . I found THIS TO WORK . . . . . . .
1. Make adjustments to your image
2. Click on "O" as before
3. Place your curser on the image you just adjusted and "left click"as before
(you will still here the "bloop" - don't worry it copied the adjustments.
3. Next (here's the odd thing) . . . .press Shift+O (Now your stamp arrow will be pointed down as before and you can paste the adjustments to your images that you want the past the adjustment) You can even use the shift key as before to do multiples.