Hi!
Do you mean that the search does not redirect when the ‘return’ button or the magnifier icon is clicked? Unfortunately I don’t have a mac at this moment, only an iPad and an iphone to test with – but both of them are working okay on my end, the redirection is happening.
Anyways, make sure to update to the latest release first (4.11.4), and to clear your website cache as well, to see if that helps.