Adjustment layer effects on a group are affecting all groups including and below the intended one

Hi,

I'm trying to apply an adjustment layer to a group of images within a composite document.

Unfortunately, the adjustments are not only affecting the intended group, but every other group below.

I had a quick look online and in previous incarnations of Ps you could select Open Preferences > Performance... check "Legacy Compositing" and then close & reopen files; or restart Photoshop.

However as of version 22, the Legacy Compositing checkbox is no longer available in the performance preferences.

Any ideas?

Cheers for any help