I found a problem inside CuteEditor\Scripts\
IE_Implementation\CuteEditorImplementation.js
Gecko_Implementation\CuteEditorImplementation.js
inside a call to "function Ox970(Ox2d)"
To fix replace this line: (inside Gecko_implementation)
Ox2d = Ox2d.replace(/(<a\s[^>]*href=)(["'])([^"'>]*)["']([^>]*)(\shref_cetemp=)["']([^"'>]*)["']/gi, OxO40c2[1084]);
with those two lines instead:
Ox2d = Ox2d.replace(/(<a\s[^>]*href=)(["])([^">]*)["]([^>]*)(\shref_cetemp=)["]([^">]*)["]/gi, OxO40c2[1084]);
Ox2d = Ox2d.replace(/(<a\s[^>]*href=)(['])([^'>]*)[']([^>]*)(\shref_cetemp=)[']([^'>]*)[']/gi, OxO40c2[1084]);
for IE_Implementation
use OxO4c7c[1034] as second replace parameter instead of OxO40c2[1084]
The problem is that RegEx pattern chokes when trying to parse out "href_cetemp=..." temporary URL out of text with nested alternative quotes.
Disclaimer: Use at your own risk - I have no affiliation with Cute team.