In G+ new design, some +1s cannot be seen because some users makes it hidden. The question is how to know who have +1'd my posts (the full list). There is no special option is the new design of G+.
Of course you can see +1's and shares as they happen in your notification panel.
On the post itself, click the down arrow in the upper right corner and choose "View Post Activity".
There you'll see the +1's and shares for the post, excepting content from users who have blocked you or otherwise hidden their content from you, as it should be. (h/t to batpigandme)