Inconsistent rounding of save buttons at the bottom of the edit forms (in-place or not)

When editing a document in-place, the save buttons are displayed on the bottom, 2 save buttons and a cancel button.

The corners of the save buttons are not rounded on the right side, I would kind of expected them to be, to be consistent with the cancel button that is all rounded:

Better visible in a color theme that uses darker colors for the buttons: