This is “old” topic, but still remains an issue. For me at least
I have troubles to add div-tag to source. It’s stripped no matter what the settings are.
I also have problems keeping empty tags, or tags with " " .
Cleanup - No
Clean Spaces - No
Convert Divs - No
Paragraphize - No
Paragraphy - No
Also added “div” to Allowed Tags.
Also noticed, if you add only one tag - div in this case - to allowed tags, you have to add ALL needed tags.
Redactor is nice plugin, but this problem keeps me switching back to TinyMCE at the moment.