This was changed so that "Paste Mocha Mask" would correctly apply the invert and blend modes in mocha layer properties. Previously it did not.
The Paste mocha Mask option should now match the regular shape effect paste (CTRL/CMD+V). Are you seeing incorrect results?
I second the vote that I am not a fan of this behavior at all.
As I'm creating rotos for things and pasting them into After Effects, every time I paste in a mask, when it comes in as intersect it completely ruins the intersection behavior of all my masks and I have to go in and change it to Add. Before I never had to do this. This adds an annoying extra step every single time I paste a mask. Is there a way I can disable this?