Hi,
Following up on my last post. Downgrading to version 5.6 fixes the problem for me. All visual editor tabs are working perfectly fine now.
Same issue here. I have multiple WYSIWYG editors on a custom post type. The first visual editor loads fine, however, the remaining editors do not load. Instead, Chrome console gives me the following error:
Uncaught TypeError: Cannot read property 'onpageload' of undefined
at h (tinymce.min.js?ver=4603-20170530:14)
at m (tinymce.min.js?ver=4603-20170530:14)
at h.l.bind (tinymce.min.js?ver=4603-20170530:2)
at o.bind (tinymce.min.js?ver=4603-20170530:4)
at Object.init (tinymce.min.js?ver=4603-20170530:14)
at e (editor.min.js?ver=65c0a7335dc6663744f226e2b48b91ca:1)
at HTMLDocument.<anonymous> (editor.min.js?ver=65c0a7335dc6663744f226e2b48b91ca:1)
at a (tinymce.min.js?ver=4603-20170530:2)
at HTMLDocument.p (tinymce.min.js?ver=4603-20170530:2)
I have tried deactivating all plugins. Will try downgrading my version of ACF.