fixed perfromance (flickering, speed) issues with having pointerEvents prop invalidate documents - switched to using a function to avoid flickering on PDFs of annotations in particular.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/client/views/nodes/ComparisonBox.tsx b/src/client/views/nodes/ComparisonBox.tsx
index 78608b681..abb01c466 100644
--- a/src/client/views/nodes/ComparisonBox.tsx
+++ b/src/client/views/nodes/ComparisonBox.tsx
@@ -3,7 +3,7 @@ import { action, observable } from 'mobx';
 import { observer } from "mobx-react";
 import { Doc, Opt } from '../../../fields/Doc';
 import { Cast, NumCast, StrCast } from '../../../fields/Types';
-import { emptyFunction, OmitKeys, returnFalse, setupMoveUpEvents } from '../../../Utils';
+import { emptyFunction, OmitKeys, returnFalse, returnNone, setupMoveUpEvents } from '../../../Utils';
 import { DragManager } from '../../util/DragManager';
 import { SnappingManager } from '../../util/SnappingManager';
 import { undoBatch } from '../../util/UndoManager';
@@ -96,7 +96,7 @@ export class ComparisonBox extends ViewBoxAnnotatableComponent<ViewBoxAnnotatabl
                     Document={targetDoc}
                     DataDoc={undefined}
                     hideLinkButton={true}
-                    pointerEvents={"none"} />
+                    pointerEvents={returnNone} />
                 {clearButton(which)}
             </> :  // placeholder image if doc is missing
                 <div className="placeholder">