Empty Menu for Label Cell Card? (OH3)

Tags: #<Tag:0x00007fc8f87a3078> #<Tag:0x00007fc8f87a2fb0> #<Tag:0x00007fc8f87a2ec0>

Hello,

i am actually migrating my system to the new great OH3.

I created some label cards in main ui and i am wondering about the 3-dot-options menu:
When i click on the card, the group items open as aspected, but when i click the menu, a blank layer opens.
Can you tell me, how to use/deactive this menu?
grafik

component: oh-label-cell
config:
  header: Wohnzimmer
  item: WZ_Licht
  action: group
  actionGroupPopupItem: WZ_Licht
  icon: f7:lightbulb

I found a solution to remove the dots right here:

But what do these dots usually do?