I didn't test both addons in Revo 2.3. But the information from thread "Extras Compatibility #11630" points to an incompatibility.
TinyMCE 4.3.3:
- Extras partially working in 2.3
- TinyMCE 4.3.3-pl, working but some paths need updating, seems non-breaking atm though, maybe some issues with fullscreen-mode (@sepiariver, @sottwell, @linlex, @rainbowtiger)
CKEditor 1.1.1:
- Extras partially working in 2.3
- CKEditor 1.1.1-pl danyaPostfactum/modx-ckeditor#17 (@exside)
I know that CKEditor is patched, see
https://github.com/danyaPostfactum/modx-ckeditor/issues/17, but the package in the MODX Package Browser still is version 1.1.1 from April 02, 2014. I checked the files, they are not updated. I can update the corresponding file (manager/assets/components/ckeditor/modx.htmleditor.js) manually, but that is not THE solution.
No feedback on both repositories! I do not want to let my clients use buggy software...
BTW, TinyMCE is really outdated. So CKEditor is the option.