--during dragging the DelegateModel inside
TaskWindows may not catch up with TasksModel
modelIndex() function and that could create
crashes. In order to avoid such crashes the
DelegateModel is not updated during dragging
and we give it also a little time to update
after the dragging has finished.
--moving a task now is not synced immediately to
other docks. Syncing takes place only in the end.
The dock in which the user changed the launchers
order sends a signal to other docks to update
theirs launchers order.
BUG: 401232
--following issue from #730 more qml code
was found that wasnt releasing connect signals
properly. That could create crashes because
already deleted qml objects could receive such
signals. That was observed after qt>=5.9.2
Michail Vourlakos