CKeditor problems with simple cache

We had several issues with CKeditor:

  • Extremly slow when simple cache deactivated (of course, site is slower then by default - but there was a significant difference when we turned off CKeditor)
  • Not always working when simple cache activated (very often the editor loaded but people could not edit content - simply the field was frozen)
  • Complaints came from users with all different types of browsers (including Firefox, IE 10, Edge, Chrome)
  • We investigated several hours (including with a clean theme but on the same installation); also had professional devs (with elgg experience) investigating

I just thought would be good having that issue mentioned - if somebody has the same issue, and maybe a solution, let me know.

For now we switched to Extended TinyMCE and it works fine (