Standard ui-lovelace is not updating groups?

I changed/added some devices in some groups.
The standard ui-lovelace is not updating the new sensors and only showing the groups before updating.
If I remove the group totally. The group is not presented in the standard ui-lovelace.
If I put the group back again adding also the extra device/sensor. The group is showing up in the standard ui-lovelace again, but still without the new added sensor???

I do use beside the standard ui-lovelace Dwains theme. I did not change the standard ui-lovelace to design it by myself, but keeps it automatic creating.
I’m not able to find the ui-lovelace.yaml file?
How to get the standard ui-lovelace pick up all the sensors of the groups again?

Nobody any idea?