When creating a large card in the lovelace Configure UI, like Vertical stacks, the save button disappears down the screen and is inaccessible.
The work around I have is to leave an error in an entity so I can save then correct it later with the raw editor.
This doesn’t happen when I edit it later unless the cards get larger.
Hassio 0.92.0
I have tried different browsers on Mac and Windows all behave the same.