Missing label for boolean fields

// I didn't found an similar issue, so i created this one. Please close if duplicated or already fixed in newer versions.

Boolean fields has no labels in the node edit form.

1. edit a content type
2. create a boolean field "Bug"
3. use "Yes" and "No" as labels
4. open the node edit page, you will finde a single checkbox with "Yes" besides, but you don't know what yes means

instead of: