Although the issue in this thread is now solved, I do have one additional question.
I discovered that Editing with Map Topology enabled (default), moving symbols is far slower than Editing with No Topology! A lot more slower!
But in the other hand, Editing with no Topology do not keep the symbol size according to the Reference Scale, with in turn is rather annoying (illustrated below). Is there any way to apply Reference Scale to symbols when Editing with No Topology?
Editing with Map Topology (symbol size correct according to Reference Scale):
Editing with No Topology (symbol size reduced and to to scale)