Align Asia Fit tight behind knees?

I had the regular Aligns before they changed the material and they were my favourite, so comfy and felt like nothing (Size 2).

I purchased the Align Asia Fit in XS as my old Aligns unfortunately got ripped. I'm petite/5"3 and thought these might fit me even better proportion -wise. They look amazing on (although the material is not as soft and comfy anymore...) but they are very tight behind the knees. I'm assuming this is a sign they're not a good fit for me?

Appreciate any guidance as it's a big purchase for me, just so sad I can't replace my old Aligns like for like!