I often add
between connecting words so they break down together to a new line in important text. Switching to visual tab then back to text tab removes these. What can I do to keep them and avoid TinyMCE removing them?
I found this but not sure how to apply it to WordPress: https://www.abeautifulsite.net/tinymce-removes-non-breaking-spaces
My ugly solutions would be using a different custom string between words__like__this then later replacing them to
in PHP, before display. Or just typing it on the visual tab, which translates to  
but then converting them with PHP.