Object Grouping fails to work about drawio-desktop HOT 2 OPEN

Are you dragging the outer boundaries of the grouop? Because if you drag an Element inside the group, it won`t drag the group but the element you are dragging.

from drawio-desktop.

Dragging the boundaries of the outer object moves just the outer object since the grouping action was not performed. Dragging the inner object moves just the inner object since the grouping action was not performed.
Click to other object then click back, the grouping action has not been performed.
Trying to re-group the two objects again and again has no beneficial effect.
Close the app and re-open and the same "I've done enough grouping on this page" effect seems to hold.
On the page in question, there are 40 or 50 groups already and at some point it feels like the app is saying "enough already, no more grouping for you".

from drawio-desktop.