This is soo freaking cute!!

Oh no! 🤣 How dare they hog all that real estate?! 🤭

Am I just being extra dumb or isn't that just oxygen? 🤔

Ref sheet and proper intro post coming soon....
There are just a few more things I wanna tweak... 👀
I-I swear...
Just a couple more....😬

A few days late, hopefully, you've already found the answer - but with the limited info, my first thought is to check the weight painting of the affected vertices. Possibly whether they're assigned to the right grouping or a shape key is getting in the way...