There is a replacement for that feature: https://github.com/maykar/kiosk-mode
And small header is now available in Core as well.
So, you can have the same look in 2020.12 that you have in 0.114.4.
Thank you! Massive help.
Sure it’s a small issue but I can’t find Kiosk Mode in HACs at all! Very odd. Is it because I still have custom header installed? Or my version of HA is too low? Didn’t think HACs made those checks?