Only canvas events refreshed the 1.5 s input window, and a touch only on
touchstart. Cesium follows a drag that leaves the canvas at document
level (in Firefox, and wherever there are no pointer events), so a long
gesture kept moving the camera after the window closed, and the pulses
rested mid-gesture. From a pointer or touch start on the canvas until
its end or cancel, moves at document level now count too; the listeners
go when the gesture ends or the layer detaches.
Sameh Khamis
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