1 files changed, 7 insertions, 5 deletions
diff --git a/src/client/views/InkControlPtHandles.tsx b/src/client/views/InkControlPtHandles.tsx
index 73de4a3e0..607137c2f 100644
--- a/src/client/views/InkControlPtHandles.tsx
+++ b/src/client/views/InkControlPtHandles.tsx
@@ -2,10 +2,10 @@ import React = require("react");
 import { action, observable } from "mobx";
 import { observer } from "mobx-react";
 import { Doc } from "../../fields/Doc";
-import { ControlPoint, InkData, PointData } from "../../fields/InkField";
+import { ControlPoint, InkData, PointData, InkField } from "../../fields/InkField";
 import { List } from "../../fields/List";
 import { listSpec } from "../../fields/Schema";
-import { Cast } from "../../fields/Types";
+import { Cast, NumCast } from "../../fields/Types";
 import { setupMoveUpEvents } from "../../Utils";
 import { Transform } from "../util/Transform";
 import { UndoManager } from "../util/UndoManager";
@@ -43,8 +43,8 @@ export class InkControlPtHandles extends React.Component<InkControlProps> {
      */
     @action
     onControlDown = (e: React.PointerEvent, controlIndex: number): void => {
-        if (InkStrokeProperties.Instance) {
-            const screenScale = this.props.ScreenToLocalTransform().Scale;
+        const ptFromScreen = this.props.inkView.ComponentView?.ptFromScreen
+        if (InkStrokeProperties.Instance && ptFromScreen) {
             const order = controlIndex % 4;
             const handleIndexA = ((order === 3 ? controlIndex - 1 : controlIndex - 2) + this.props.inkCtrlPoints.length) % this.props.inkCtrlPoints.length;
             const handleIndexB = (order === 3 ? controlIndex + 2 : controlIndex + 1) % this.props.inkCtrlPoints.length;
@@ -53,7 +53,9 @@ export class InkControlPtHandles extends React.Component<InkControlProps> {
             setupMoveUpEvents(this, e,
                 action((e: PointerEvent, down: number[], delta: number[]) => {
                     if (!this.controlUndo) this.controlUndo = UndoManager.StartBatch("drag ink ctrl pt");
-                    InkStrokeProperties.Instance?.moveControlPtHandle(this.props.inkView, delta[0] * screenScale, delta[1] * screenScale, controlIndex);
+                    const inkMoveEnd = ptFromScreen({ X: delta[0], Y: delta[1] });
+                    const inkMoveStart = ptFromScreen({ X: 0, Y: 0 });
+                    InkStrokeProperties.Instance?.moveControlPtHandle(this.props.inkView, inkMoveEnd.X - inkMoveStart.X, inkMoveEnd.Y - inkMoveStart.Y, controlIndex);
                     return false;
                 }),
                 action(() => {