No visible notification in the center of the screen when the volume is changed

Hi, today I installed Fedora Kinoite 40 with of course Plasma 6. Until then I always had a pop up in the center of the screen indicating the actual volume level in percentages of the maximum level. This distro now doesn’t have that and I kinda miss it. I looked (probably almost) everywhere but haven’t been able to find the setting which is responsible for this.
Plasma 6 of Fedora 40 KDE has it (used it till this morning) and if I recall correctly also did Kinoite, but not now.

Who can help me getting this pop up back?