In the 21.1 update, vector/shape behaviours have changed and are pretty much broken. I posted a few days ago about copying from shape to shape being broken and an Adobe employee confirmed that it's a bug.
Today I discovered that copying and pasting a vector/shape from Photoshop to Illustrator no longer works at all. I assume these two issues are related.
I'll be reverting back to PS 20 for now, this most recent thrown a big monkey wrench into my daily workflow. I would advise people NOT to update if you do lots with shapes in Photoshop.