I have this problem as well. Anyone have a solution?
When I click on the Add Image on any of my front end forms I get the following error in the console:
Uncaught ReferenceError: wp is not defined input.min.js?ver=4.3.8:1
acf.fields.image.popup input.min.js?ver=4.3.8:1
(anonymous function) input.min.js?ver=4.3.8:1
n.event.dispatch jquery.js?ver=1.11.0:3
r.handle jquery.js?ver=1.11.0:3
