fix dragMove running after dragEnd

frontend/code/components/drawer.ts

@@ -268,7 +268,6 @@ export class DrawerComponent extends ComponentBase {
         ) {
             this.openFractionAtDragStart = this.openFraction;
             this.dragStartedAt = relevantClickCoordinate;
-            markEventAsHandled(event);
             return true;
         }
 
@@ -283,8 +282,6 @@ export class DrawerComponent extends ComponentBase {
     }
 
     dragMove(event: PointerEvent) {
-        markEventAsHandled(event);
-
         // Account for the side of the drawer
         let relevantCoordinate, drawerSize;
 
@@ -314,8 +311,6 @@ export class DrawerComponent extends ComponentBase {
     }
 
     endDrag(event: PointerEvent): void {
-        markEventAsHandled(event);
-
         // Snap to fully open or fully closed
         let threshold = this.openFractionAtDragStart > 0.5 ? 0.75 : 0.25;
 

frontend/code/eventHandling.ts

@@ -147,7 +147,11 @@ export class DragHandler extends EventHandler {
         // triggered if mousedown and mouseup happened on the same element.)
         //
         // Workaround: Delay the disconnect a little bit.
-        requestAnimationFrame(() => this._disconnectDragListeners());
+        window.removeEventListener("pointermove", this.onPointerMove, true);
+        window.removeEventListener("pointerup", this.onPointerUp, true);
+        requestAnimationFrame(() =>
+            window.removeEventListener("click", this.onClick, true)
+        );
 
         this.onEnd(event);
     }