Sometimes when I dispatch a unit to a call from regular list (not stacked) the same unit shows up twice in the "units responding" list. One says the time to on scene(normal), the "other" unit that is on the responding list says the call name (as if being stacked). when this happens I am unable to stack that unit on another call because it thinks it already is stacked. This issue started after the recent update of it telling you in the responding section where the vehicle is at. I could stack calls before ok.
As another bug, sometimes when I stack a call and exit the page/app it doesn't respond to the next call. Other members of my alliance are also reporting this.