Same here.
{
"apiVersion": 2,
"name": "acf/home-solutions",
"title": "Lösungen (Home)",
"description": "Der Lösungen Bereich - nur für die Startseite",
"category": "xxx",
"icon": "star-filled",
"keywords": ["home", "lösung"],
"acf": {
"mode": "edit",
"renderTemplate": "home-solutions.php"
},
"supports": {
"align": false
},
"style": ["file:./style/home-solutions.css"]
}
The edit mode shows preview and the toggle icon to edit.