Lovelace WEB UI no SAVE Button available

Hi,
there is no SAVE button available at the lovelace UI.
I would like to start with some new cards and vertical stack setup, but all cards show only the CANCEL button.

Regards,
Joerg

OK, after restart today I can proceed…

SOLVED

This is intermittently happening to me. Seems to be independent of which card, so “bug?” would appear to be in Lovelace.