I have the following problem with TinyMCE in a Plone instance.
When TinyMCE is being used, all actions that need a popup (insert link, insert image etc.) are now opening in a separate browser window, instead of in TinyMCE's own popup overlay.
This breaks TinyMCE functionality, because jquery cannot be found:
Uncaught TypeError: jq is not a function at BrowserDialog.init (plonebrowser.js:66)
My user says this problem started after enabling 'undo/redo' in the TinyMCE configuration. However, I cannot reproduce this. Disabling 'undo/redo' did not help.
Plone version: 4.3.7