Here it is; Issue 963024 - chromium - An open-source project to help move the web forward. - Monorail
Also note, the pointerDown issue seemingly disappeared by itself, an related pointerUp issue (down, drag, release) still occurs.
You can try to check for movement before processing the pointerMove event,
if(evt.movementX === 0 && evt.movementY === 0){
return;
}
I haven’t had any issues since 