We're having some problems with WP Smush Pro and custom post types. When trying to open media gallery in custom post types created with ACF Pro plugin.
We have issues triggering the media gallery function.
I have a video showing you exactly what we're running into here: http://cloud.avelient.co/1b023s3P0A2K
And I have the console error output here: http://cloud.avelient.co/3D2h0N3b1e07