The Di2 Buttons on the STI dosen't behave as expected compared to 1030.
On 1030 LONG press on Di2 button allways trigged the configured action, e.g. map-view.
Doesn't matter, where your are.
On 1040 LONG press only working when your are in the "normal" page sequence.
If the slide-down menue is active or you are somewhere in the system-menue there is no reaction.