We have a client site that uses Wygwam 2.7.1 on EE 2.5.3 and we have an issue on only one channel entry, and only for a few people. When the entry is loaded in the CP, certain users just see this:
All other users see the Wygwam field perfectly fine.
This channel entry has a lot of YouTube video embeds in the Wygwam field (about 20 videos). That's the only thing different from the other entries and this is only happening for two users so far on Firefox. There is a js error that only shows up for the users who are having this issue. The error is:
TypeError: w.filter is not a function http://www.siteurl.com/themes/third_party/wygwam/lib/ckeditor/ckeditor.js Line 31
I can't recreate this same error on any other computer. Has anyone come across this before or has an idea of how to fix it.