Adjusting the structure in structure view automatically adds element inside above structure

[ivansrbic]

IF this is my structure:

and I add a new element

then drop and drag it under last element

it will automatically get inside the last element where applicable (div,grid,section) instead of staying on same hieararchy.

what i should have is
-Div
-Div
-New element

All in same hieararchy.

What I get is
-Div
-Div
--New Element

(New element automatically becomes nested inside last Div).

issue is from version 2.8.0 and also present now in 2.8.1