Hi @all.
I´m not sure, but i think i found a bug in Designer while it´s dividing an object.
For example i create an object of circles like in the screenshot below....

... and i want to divide it in separate elemtens.
The result looks so:

It seems that designer deletes shapes while it´s dividing. But that happens only if there is a lot of shapes. If there are not so much, it doesn´t happen.
Look the screenshot below please.
After dividing this, it´s ok and nothing will be deleted.

Perhaps a bug?

I´m using Designer