From 8aa05da55045884bebcd9713f3d6d8e2166d6436 Mon Sep 17 00:00:00 2001
From: hamed musallam <hamed.musallam@gmail.com>
Date: Thu, 2 Apr 2026 14:50:02 +0200
Subject: [PATCH] fix: simple click for selection for STOCSY

close #4082
---
 src/component/1d/BrushTracker1D.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/component/1d/BrushTracker1D.tsx b/src/component/1d/BrushTracker1D.tsx
index bb46b761c4..4eaaa4fd52 100644
--- a/src/component/1d/BrushTracker1D.tsx
+++ b/src/component/1d/BrushTracker1D.tsx
@@ -470,7 +470,7 @@ export function BrushTracker1D({ children }: Required<PropsWithChildren>) {
               break;
             case 'zoom':
             case 'matrixGenerationExclusionZones':
-              if (!showStocsy || !event.shiftKey) break;
+              if (!showStocsy) break;
 
               dispatchPreferences({
                 type: 'CHANGE_MATRIX_GENERATION_STOCSY_CHEMICAL_SHIFT',