TYPO3 Core

On TYPO3 9.4-dev a "Insert Soft Hyphen" button has been added (you can access it with full.yaml configuration).

I've not tested it with IE, but here is what I found with Chrome (MAC):

1) if you switch the editor to "source code", the inserted hyphens are not visible, but they are actually present in frontend (you can see them using Chrome inspector)

2) if you want to print out the ­ character in CKEditor source code mode, you have to add to the yaml config file:

editor:
  config:
    entities: true