1 files changed, 2 insertions, 5 deletions
diff --git a/src/client/util/SelectionManager.ts b/src/client/util/SelectionManager.ts
index e864458d8..f7e6fa2dc 100644
--- a/src/client/util/SelectionManager.ts
+++ b/src/client/util/SelectionManager.ts
@@ -64,11 +64,8 @@ export namespace SelectionManager {
         manager.SelectSchemaViewDoc(document);
     }
 
-    // computed functions, such as used in IsSelected generate errors if they're called outside of a
-    // reaction context.  Specifying the context with 'outsideReaction' allows an efficiency feature
-    // to avoid unnecessary mobx invalidations when running inside a reaction.
-    export function IsSelected(dv?: DocumentView | Doc): boolean {
-        return (dv instanceof Doc ? Array.from(dv[DocViews]) : dv ? [dv] : []).some(dv => dv?.SELECTED);
+    export function IsSelected(doc?: Doc): boolean {
+        return Array.from(doc?.[DocViews] ?? []).some(dv => dv?.SELECTED);
     }
 
     export function DeselectAll(except?: Doc): void {