Liquid Glass material behaviour question

I have two views I've applied Liquid Glass to in Swift UI. I've noticed that depending on the height of the view the material changes and I'm not sure why. See the attached screenshot. Both views add the liquidGlass style in the same way but behave very differently on the same background.

Ideally I'd like them to look the same as the bottom one. Is that the same as the clear style?

Liquid Glass material behaviour question
 
 
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