The child component is not destroyed somehow

The child component is not destroyed when the actor with the child component is suddenly destroyed.

There are three child components and there is an instruction that every child component is destroyed at the same time as the parent actor is destroyed.

However, the problem is that the instruction is ignored and the child component is left behind.

Was self resolved.
It seemed that child components were copied independently on the level. I resolved when I deleted only the copied part.